"Sometimes there's nothing like a mothers love to help get you thru. Thank you mom for always being there and being so strong for me. I love you," she wrote, along with a photo of herself cuddled up in her mom's lap, adding the hashtags #mamarosa, #cancersucks and #fightlikeagirl.
The Beverly Hills 90210 star revealed her breast cancer diagnosis in a lawsuit against her former management team in August, claiming her mastectomy and chemo treatments likely could’ve been avoided had her health insurance coverage been kept up to date.
"I had breast cancer that spread to the lymph nodes, and from one of my surgeries we discovered that some of the cancer cells might have actually gone out of the lymph nodes," she revealed. "So for that reason, we are doing chemo, and then after chemo, I'll do radiation."
"The unknown is always the scariest part," she said. "Is the chemo going to work? Is the radiation going to work? You know, am I going to have to go through this again, or am I going to get secondary cancer?"
"Everything else is manageable," Doherty explained. "Pain is manageable. You know, living without a breast is manageable. It's the worry of your future and how your future is going to affect the people you love."