Is AUTHOR wrong in the post ? POST : This happened 4 years ago. I've always been conflicted about whether I was overreacting or not.

My mother was diagnosed with inoperable cancer 4 years ago, and passed away within 5 months of diagnoses. It was a rough 5 months as my father and I did the majority of the caretaking for her.

At the same time a woman I've known since I was 14, (we were in our early 30s at this point),  had a pet die. It happened the same night I found out my mother had brain tumors. I tried to let her know I felt bad about her pet, but I had my own thing going on and couldn't be there for her. She insisted on calling me anyway to talk about her cat. Annoying, but my mom wasn't dead yet and my friends beloved pet was. I let it go.

Fast forward 5 months. My mother just died. I haven't been talking to my friend much because I've either been busy or exhausted. And a bit I was dodging her calls because all she ever talked about were her cats. But she wants to come to the funeral since she knew my mom and really cared for her. I let her know when and where and that she's welcome to come back to the house for the close friends and family get together after the reception.

She showed up at the church the funeral was at and I just couldn't shake her. After the service there was a reception and she followed me around it, talking to me about cats and complaining about living with her father. There were over 200 people at the service, my mom was well liked by her community. Most of them wanted to offer their condolences and as they did my friend kept awkwardly going on about her problems in the background. At one point I managed to slip away from my friend to have a smoke outside and she tracked me down. It was at that point I told her for the second time I really needed a break from the cat talk, and suggested she go say hi to her brothers family.

She came back to my side as soon as she could and continued on about the cats for the rest of the day. It was infuriating. The next day I blocked her from my social media and sent her a text saying I didn't appreciate her behavior and needed some time and space from our friendship. She flipped out, sent a lot of insulting messages, engaged with name calling. I just blocked her numbers and haven't spoken to her since.

I just wonder if I was overreacting out of grief, exhaustion, all the heaviness that comes with caring for a dying relative. AITA?