YES, the closer you are to someone with a serious mental health issue and the more manipulative that person is can cause you to go completely bonkers. Whenever they're going into a downward spiral why not bring you with them??
I had someone who was severely bi-polar in my life. Everything was great for a while but then she managed to over time suck me into her animal hoarding problems. Before I knew what was going on I had 65 cats ruining my house! And then I had to be paranoid of being reported for said 65 cats because I didn't want to lose the animals that were mine all along and I was taking care of properly. These cats had every disease known to felinedom and it was a MASSIVE strain to treat them, home them, etc. It's been 10 years since this happened and I still have five of them - who I hate - because they have such bad IBS no one will take them. I'm seriously considering putting them down, which makes me feel guilty and shitty because it's really not the cats fault they found themselves in this situation.
In the meanwhile I have distanced myself greatly from this person. We only talk on the phone every now and then. But she makes sure to call whenever she's going through a crisis - anything from, "I'm in the ER bleeding - think it's a miscarriage" to "I'm homeless again and I don't know where to go." to "I swallowed all my stashed pills. Just wanted to say bye." (I should mention I never know where she is when she does any of this BS so there's nothing I can do to begin with and I sure as hell am not offering her space in my house again for her or anything else!)
Long story short I can thank her for countless panic attacks, ongoing anxiety, a complete lack of trust in pretty much all people, severe pessimism, and exhaustion among other maladies.
Here's what changed me from trying to rescue her to wanting to break free - I looked at myself one day and realized I didn't like the person I was when I was around her. If this is how you feel with your mother than I suggest you run for the hills. It's really tough, you might not make it on the first try, but you will be better off for it. I'm sorry.