Prayer Request

My mom died in Sep. 7 . Prior of that I had a big fight/ argument with her. She was calling me and texting me and I didnt answer , she died a week after that for a heart attack. I feel guilty, sad. I didnt apologized to her, I didnt answer her call to calm the situation, she was texting me that she loves me. I want her to be in peace, I am scared that she isnt in peace because shw wanted to talk to me and I didnt give her the opportunity. Please pray for her soul.