Terrible night.. did I do the right thing?

My mom has some really toxic traits, I don't want to get into it but my childhood was rough and she caused a lot of it.

Today I told her all of it, how I'd been suicidal, all the pain.

She bawled while I told her and she now says she'll never forgive herself and said she's so sorry.

I feel better but also horrible. Now I don't know if I did the right thing, I know things will never be the same. She's already such a broken person.

Has anyone else confronted their parents and it has been healing?