My 20 year old niece is staying with me. She's lovely, no bother and a good house guest. Ive seen her through thick and thin in the last few uears. Life is tough for me at the mo. I'm stressed beyond anything I've felt before and not coping at all. I feel close to burnout and on the edge of a nervous breakdown. Seriously sleep deprived. Didnt sleep for 48 hours and then got 4 hours the mext night. Niece went on a night out. Said she'd be back around 11. Didn't take a key, said I'd wait up for her. Got a text at 11.30 saying she'd be back at 1am. She arrived at 1.30pm. I was deranged with exhaustion. I was curt with her but didn't want to bite, so said I was exhausted and went straight to bed. She was snarky with me but I didn't bite. We were meant to be up and out early the next day on a trip out. I was up at 6am, so only got another 4 hours sleep. She came downstairs around 9am and said are you OK. I said no, I was exhausted. That's literally all I said, albeit in a frustrated tone. She burst in to tears and fled upstairs. She came back downstairs and said she was leaving. I said fine, do what you want. More tears. 10 minutes later, she'd packed and gone, saying it wasn't what she wanted but was giving me space.
So it all got very quickly out of hand and we haven't spoken since. She knows I'm not coping with life right now. I also said absolutely nothing to her other than I'm exhausted and I get tears and flouncing.
So am I the twat? Should I just be upbeat and smiley and suck it up and not react to her keeping me up til 1.30am. Or is she out of line?