Having re-read the OP's erm, OP, I see (and correct me if I am wrong):
- one mtf online who hit on her
Honestly - this is not at all out of the ordinary. considering the immense diversity of people online and the lack of restraint that is generally shown, I would guess that this isn't shocking at all to anyone. Of the conversations I have seen online, that is very very tame lol. I am surprised that would shock anyone, especially as the OP then says "I know how message boards work, and thus not going to take offense'.
- one 'out' mtf who asked how her boobs look and another who said men don't know how to satisfy women.
Now in my life I have met many, many people who are too forward. She was one..... and? I am a little shocked that this would mean anything to you at all, especially for someone who lives "in a highly left wing leaning college community with lots of strange people". If it had not been a trans person, you would have just thought, "well she was a bit forward" and then paid it no more thought. I am not accusing you of being a bigot, but I can definitely see how your move from "I saw a trans person who was forward" to "I feel violated" and "are all trans people like that" would put you in line for people calling you that.
The trans person you met will likely not have got to socialise with groups of girls as one of them growing up, may have had little idea of how to be 'one of the girls' and be taking their best guess. I am thinking sex in the city style. Just a guess. It doesn't really matter.
They were too forward, and? That's just life. If I met a trans person and they were rude, I wouldn't assume all the trans people in the world were rude. We are not (especially me - I am lovely!

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