I reached out to a former friend

My friend Norma hasnt spoken to me since last october. She just quit talking to me one day. I never knew why.
The truth is I miss her. We used to talk daily. Sometimes multiple times a day.
She didnt give any reason why she wasnt talking to me, but her mental health wasnt great, so I was assuming it was something to do with that.
As I said, I’ve really missed her and I worry about her as she doesnt really have many friends, she’s quite isolated and she lives alone.
So today I rang her. I decided to just go ahead and call her to see if we can patch things up.
She answered my call but she said she was unable to talk just now. She said she’d call me back later on this evening.
I really hope she will. I really want to work it out with her.
She was a good friend. If her mental health was the cause of her not talking to me then I will understand, as sometimes I want to hide away from the world also.