reddit twat #2

You say that she's unable to have a conversation with a stranger, but look at what happened. She was the one to initiate conversation, to ask questions, and all she got back was closed and mostly one word answers. A conversation is a two way street, and she got shut down pretty hard, repeatedly.
If you ask me it's not so much a question if she's able to have a conversation in that setting, or if she's -comfortable- having a conversation in that setting and wants to be there. Being comfortable in a big group or party isn't somehow a superior trait, it's simply a preference. You're very quick to call her socially inept, but maybe she doesn't WANT to be the star of a party?
Personally, I think you're reading a lot into it that isn't really there. I also wouldn't tell you it's your 'fault' for not enjoying big parties or dealing well with strangers. Why would it make you any less or worse of a person to not like big parties. It makes as much sense to say it's my 'fault' that I don't enjoy bagpipe music, and to suggest that it makes me a less valuable person.
It's also not just pure melodrama to point out that you're being misunderstood. Understanding is a good thing for everyone, why wouldn't someone want to clear up a misunderstanding about them? I don't read this as a cry for sympathy, but more a "I wish people wouldn't take it personally that I don't like the parties they throw." or "I wish people wouldn't think I'm sad, lonely and depressed all the time. I'm actually quite happy when I'm at home reading books."
Being an introvert isn't a flaw, it isn't a deficiency. You should stop blaming people for it, most of all yourself.