I'm so short tempered

Mom and I have been arguing a lot lately and over the silliest things. Mom is already getting up there and years and is very set in her ways and I am having difficulty accepting the fact that she is older. These argument usually start over some sort of miscommunication or misunderstanding, for example this evening it was about cleaning the kitchen. Because I was sentenced to jury duty yesterday, I didn't have time to do my usual Friday cleaning routine. When I got home, the carpet in the living room wasn't vacuumed, the floors weren't swept and mopped, and the kitchen wasn't cleaned. I figured I'll just do it all Saturday night, no fuss, no worries. Well mom came home around seven after spending the afternoon at sis's house and started chatting away, once again not realizing that I wasn't listening because I had head phones on. Then started creating some drama over wanting to make herself something to eat. One thing led to another and I lost my temper. In retrospect, I should've taken a calmer approach. It just annoys me to no end that my mom doesn't acknowledge the efforts I put into the house. I also worry that she doesn't realize that she can't let things go. Cleaning the house once or twice a year and not doing the laundry frequently is worrisome. While I look forward to moving out and establishing my own household, I worry that mom won't be able to handle living alone for too much longer. I doubt that sis and BIL won't be there to take up the slack. Historically they haven't exactly been the most helpful. They seem to be off in their own little world and when they come over, sis makes a big show of playing the respectful daughter and has the stones to lecture me about showing proper gratitude and respect. What a bunch of hypocrites. I should make more of an effort this year not get so short tempered with mom and to try to be more understanding. Frankly, I don't know how much longer I can hold out. I wish sis and BIL would pitch in a bit more instead of leaving me with the mess.