My mom makes me feel suffocated at times

My parents are divorced, and I (F22) live with my mom (F45). I went on a trip abroad for one month with my dad. My mom and I are really close and we both were looking forward to see each other after a month, everything was great on the afternoon when I came back and then I spend the next day morning with her but on the afternoon I went to see my best friend who I also haven’t seen.

I planned on coming back before dark, but I had jet lag and so we both fell asleep, and I ended up coming home around 9pm. (Also maybe I should mention my friend and I met at my dad’s house because my mom gets really stressed out if I invite people over, so she rather I just met her there). When I got home she was really mad, and she told me she was disappointed, and that she felt sad and shouldn’t have expected anything from me because she was looking forward to spending time with me and I was away the whole afternoon.
Obviously I felt terrible. I have clinical anxiety and it’s really eating me out right now.
The thing is it’s not the first time this kind of thing happens, when my mom and I haven’t spend too much time together and I decide to go out she tends to get mad, or the times I go stay with my dad for too long. It’s not like I don’t like spending time with her because that’s important for me, but now I feel like it’s an obligation. My grandmother told me that I should appreciate that I’m loved and being wanted to be there, but it honestly doesn’t make me feel loved, it makes me feel like shit every time because of how mad she gets.

I’m tired of this situation, and I don’t know how to handle it anymore, I’m feeling really guilty right now.
So what should I do? I originally planned on spending tomorrow with her and going to see another fiend at night, but I don’t know after this haha.

Tl; DR: My mom makes me feel obligated to spend time with her. I feel like I can’t manage my own time. I went abroad for a month and when I came back I went to see my BF but my mom got mad and now I feel guilty.