Could watching my mom decline over the years be considered traumatic?

I live with her again. My Dad is primary caretaker. We have help and do the best we can but she’s in so much distress all the time. She’s nonverbal, can’t walk, sit up, go to the bathroom alone etc and just sort of stares all day. Or sleeps. The worst part is she’s scared and anxious most of the day when she’s awake, despite the medication. I’ve been watching her decline every single day for over 3 years. I have a long history of depression/anxiety already and I guess this isn’t helping. It’s so…. drawn out. Could this have made my mental health decline even if I’m sort of unaware of it? Hope that made sense.