Talked to Mum

I talked to Mum last night and asked her to be respectful of my feelings by not criticising my ex. She said he is an idiot and I was stupid to take him back and did so because I was desperate and thought I couldn't find another..this is not true I loved him and we were building something solid. She said she didnt want to hear about my memories when we went out and wants to live rest of her life in peace. I said fine but if I need to talk please listen its not often I do. I got a call that my sisters father died and she is overseas ATM and she called when she got a text to say he passed but she called for info at 4.30 am and now mum is angry at her at me and also at my friend who just lost her Husband to a massive heart attack and is saying that she gets everyones problems..well I've had enough of my friend myself as she calls multiple times a day...and I got out of bed to take the call from my sister at 4.30am. AND I went for a big walk to get away from Mum. Is what I'm feeling wrong...I know what he did was wrong I feel okay about it all and I am allowed to remember good things...what am I doing wrong...so frustrated.