My 600-Lb. Life star Dolly Martinez's sister is defending her after her death. "My Facebook is my safe space a place where I can share what's on my heart. I'm allowed to grieve my sister, Dolly, here. I know many people knew her from a show or TikTok, and that's OK but please remember, there's so much more to her than what was seen online or on TV," Martinez's sister, Lindsey Cooper, wrote via Facebook on Sunday, April 12. "She was my sister first. She deserves peace, and she deserves kindness.