Detailed Instructions: Given a post that is a real-life anecdote of a complex ethical situation and an associated claim about its type, verify if the claim is true or not. The claim asks if the posts are historical or hypothetical. The posts are "HISTORICAL" when the author has already done something and they are "HYPOTHETICAL" when the author is considering doing something in the future. Say 'yes' if the claim is true otherwise say 'no'
Problem:CLAIM : The following post is HISTORICAL. POST : (Cross-posted from r/relationships)

Some background: my partner (43F) and I (34F) have an excellent, mutually supportive relationship. Her parents are great as well, and have really embraced me as family, which is nice as I'm estranged from my homophobic, controlling parents. Partner and I have been together for four years. We have an adorable five month old baby. Life is pretty damn great.

The only black spot in our relationship is her sister, my sister in law (40F). I simply hate her. I find her so detestable that it is difficult for me to make eye contact and smile when I see her.

TO be entirely fair to SIL, I can be a grumpy introvert who takes a while to warm up to people. She is high-functioning ASD, what used to be called Asperger's, and isn't good at reading social cues - so she steps over my boundaries without meaning to.

But here are the things I hate about her:

\- She is completely dependent on her parents: she lived with them a year ago until they bought her a house and moved her into it. She is 40 years old. She calls her mother at least twice a day, for an hour each time, because she can't stand being alone. They drive her everywhere and go to all of her appointments with her etc. She gets a small disability allowance, and apart from that they pay all her bills. This is reasonable - after all, she has a disability - but she is SO RUDE to them. She treats them like crap and just takes for granted everything they do for her. For me, coming from parents who never nurtured or cared for me, it is really frustrating to see her not appreciate any of the many, many things they do for her.

\- She completely lacks self-awareness. She thinks she is really calm and chill and self-aware. SHE'S NOT. She's anxious AF and makes everyone else around her jumpy with her annoying behaviour.

Case in point: We went out for lunch today for my partner's birthday; me, my partner, our baby, my MIL and FIL and SIL.  It was a pretty fancy schmancy restaurant, which she doesn't cope well with anyway - she gets loud, makes stupid jokes and does her nervous hysterical cackle at the drop of a hat. However, today she decided she didn't like anything on the menu and sulked. My partner asked her not to make alterations (because in the past she's been really rude to waiters, to the point of making a childish face when she doesn't like what they offer). When my partner requested this, she burst into tears and ran off to the toilet. When she came back she sulked and refused to talk to the waiter, meaning that my MIL had to order for her. She ended up getting an alteration anyway. 

Argh. There are a million other things that I could list that irritate me about her, but the TL;DR is that she's rude, ungrateful, and lacks self-awareness.

So, Reddit: Am i the asshole? Should I be more considerate of her limitations and more understanding of her disability?

&amp;#x200B; I saw SIL today and managed to have a pleasant conversation with her! It turns out she’s not too bad one-on-one, which I never realised because I’d always avoided her. Thanks Reddit! It helped to consider some of your suggestions, especially the ones about lowering expectations. 
Solution:
yes