Chad Lowe's daughter Mabel, 17, pens heart-shattering tribute to sister Fiona, 13, after teen's tragic suicide

Chad Lowe's daughter, Mabel, has shared a heartbreaking tribute to her late sister, Fiona, who died of suicide at 13.

Mabel Lowe, 17, honored her sibling by sharing a carousel of sweet throwback photos to Instagram of the two youngsters growing up and sharing everything together.

'I love you so much Fiona,' Mabel captioned the Saturday post. 'I wish your short time here was easier and I hope your mind is at ease now. I will honor you forever and keep your memory alive. I love you, I hope you knew just how much.'

Included in the slideshow were pictures of Mabel and Fiona at the beach; Fiona riding in the car with birthday balloons and her feet sticking out the window; the two little girls snuggling in a pet bed; riding in a kiddie wagon; Fiona in her crib getting a hug from her big sis; enjoying a picnic at the park; and Fiona in the dance studio among others.

Mabel's touching words come as the family embraces the heartfelt tributes that keep flooding in for their beloved Fiona following her tragic death.

Lowe's eldest daughter, Mabel, took to her Instagram Stories on Friday to repost touching video tributes from Fiona's former dance teacher and the youth club and camp Fiona attended prior to her passing.

Fiona - who the actor shared with wife Kim Painter, along with youngest daughter, Nixie, 10 - died Tuesday by suicide.

The first reel was initially posted by Kendra Andrews, who teaches and choreographs at the Los Angeles dance studio where Fiona was a student.

Andrews' lengthy caption began with a reference to the devastating Los Angeles wildfires that destroyed the family's home.

'This first video was taken only a month after you lost your home in the fire,' Andrews wrote. 'You came into the studio like you always did for all the years I've known you … excited with a beaming, bright smile and a big, warm hug for me.'

Andrews' post also featured another video of Fiona practicing the same dance after weeks of rehearsing the moves.

'The next video is our second rehearsal a few weeks later. You had clearly spent so much time outside of the studio working hard to fine tune and finesse. Your passion and determination were incredibly beautiful to witness,' Andrews shared.

'I didn't film when you performed it on stage a couple days later, as I wanted to be fully present and soak it in. I just watched from the wings, heart swelling with pride and my eyes flooding with tears of joy.

'FiFi, I love you more than words can convey. It was an honor to teach you, laugh with you, and watch you grow. Our hearts are shattered. We will never be the same without you here. I will miss you and love you forever,' she continued.

Andrews also had kind words for Fiona's parents and siblings.

'Chad, Kim, Mabel, and Nixie…I love you and I'm thinking of you nonstop,' she concluded.

Widget Works, the youth group and camp that featured beach days, ocean activities and outdoor adventures in the Santa Monica and Pacific Palisades areas of Southern California, shared a deeply moving tribute to the teenager.

Mabel reposted their video of Fiona hanging out on the beach with friends and chatting about her stuffed pumpkin pillow which she had named 'Mr Pumpkin.'

'He’s a lopsided pumpkin,' Fiona told the woman behind the camera with a jovial smile.

'Thank you, Fiona. Thank you for all the beautiful years we were able to frolic, dance, laugh and love each other,' Widget Works wrote.

'Thank you for being such an important part of our Widget Works family and for sharing your love, creativity and sweet sassiness with us.

'We will miss you, and we will look for you in every wave, every seagull squawk, and we will chant your name amongst the "we are proud of yous."'

The youth organization added: 'We love and adore you, and our hearts ache to be without you. But you will forever be part of our summers, and we will honor you and remember all the beautiful days we were blessed with you. We love you, Fiona.'

In the comments, Fiona’s mom wrote: 'Love you so much.'

Others who paid loving tribute to the late teen included the Lowe's father and Fiona's grandfather, Chuck Lowe; Lowe's former Bones co-star David Boreanaz; and actor Cary Elwes.

Lowe's elder brother, Rob Lowe, had been present for the family since the tragedy.

In a statement to People, Lowe and his casting director wife remembered Fiona as 'a loving young girl who was smart, creative, and loved to dance.'

'We are deeply heartbroken by the loss of our beloved Fiona.

'She was adored by her sisters and she was deeply loved by her parents. In fact, she was the light of our lives.

'Her passing is devastating for our entire family and we ask for prayers and privacy at this time.'

They directed anyone struggling with mental health to reach out to the suicide prevention helpline: 'If you or someone you know is struggling with mental health, please reach out to the 988 Suicide + Crisis Lifeline by calling or texting 988.'

Last year, the Life Goes On actor took to social media to celebrate Fiona turning 13 years old.

He posted a picture of his daughter on Instagram, writing in the caption: 'Celebrating Fiona officially becoming a teen today!! Keep dancing through life FiBear! Love you soooo much!! (sic)'

Nine months earlier, Lowe shared a snap of his daughters returning to the remains of their family home, which they were forced to evacuate during the Los Angeles wildfires in January 2025.

'Almost a month after we evacuated our girls finally got to go back to see what's left of their home,' he shared in the caption.

'The way they've handled this whole devastating experience is nothing short of remarkable. I am in awe of their spirit and resilience.'

Lowe, who was previously married to Oscar-winning actress Hilary Swank between 1997 and 2007, also insisted it was his 'greatest joy and privilege' being a father to the trio.

He added: 'Helping them navigate these tough times is my sole purpose. Being their dad is my life's greatest joy and privilege.'

If you or someone you know needs help, please call or text the confidential 24/7 Suicide & Crisis Lifeline in the US on 988. There is also an online chat available at 988lifeline.org