Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: I'm a junior in college, my sister is a senior in high school.

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I got home from school for winter break on Sunday. My sister was out when I got home, so I didn't see her, and I ended up going to bed before she got back. Monday, she left for school before I woke up, so I didn't see her then either, nor did I see her that evening because she was working (note that I have not left my house since I got here). During this time, I didn't hear from her at all - the last meaningful communication I had with her was a couple weeks ago, when she texted asking if my boyfriend would buy weed for her friend group. 

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Fast forward to this afternoon. I am at home alone (entire family is at work/school) when I hear someone *pounding* on the window of our front door. It's my sister and her boyfriend, who just pulled up after leaving school early. This is the first time I have seen her since I got home. I let them in and say, "Dude, where's your house key? You freaked me out." My sister responds aggressively, "I *left* it in my *room.*" I try to make some half-assed joke about her driving around with out a house key on her key ring, which prompts her to yell "*SUCK MY FUCKING DICK, OKAY?*" immediately before going upstairs to her room.

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Needless to say, I have been in a bit of a shit mood since then, as it really hurt my feelings that my little sister does not apparently care at all about seeing me for the first time in months. She asked me why I seemed so "grumpy" as I was cleaning up the kitchen after dinner, and I explained to her that I was mad that she has either been ignoring me or actively being mean to me. She responded by going off on me for not being understanding of her busy schedule, saying that I could not have possibly expected her to say hi to me last night when she got home from work because she needed to go to bed (she got home at 9:30 PM and, while I do not know exactly what happened, I really doubt that she went straight to bed). I rolled my eyes at that, but said okay, and she once again immediately stormed off to her room after yelling, "You can roll your eyes all you want but you're still a dick!" 

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So AITA for calling her out and saying that she upset me? Or for my reaction to her excuse? Or for not saying hi to her when I first opened the door? She's clearly pissed at me but I really feel like she has zero reason to be mad, especially when it seems to me that she was the dick in the first place. Enlighten me, please!

being mad my sister seemingly doesn't care that I'm home from school