IS my sister over-protective, or am I i really bad judge of character?

I sort of fell out with my younger sister just now, it started because a girl i knew from college, and have spoken to a few times in the past few weeks. Messaged me and asked to meet up, I said yes, but wasn't entirely sure what i was getting into. I wanted some support/explanation from a girl's point of view. Just in case it is a dating type scenario Im not ready for, since im not really that interested in this girl, but she asked, and i felt it'd be good for me to meet people, and the girl to not get rejected, after having the courage to ask.
Mutually beneficial.

So I messaged my sister, she said "Show me the messages?" I was like - not sure why that's needed, but okay.
She says "OH god." , leaves the conversation half an hour, which i'd already over thought everything.
When finally replying I get a response saying: "I don't know a lot about her, but i don't like her, from what I've seen and heard." -

Its aggravating, my sister is one to make friends and keep them so easily, I never am overly judgemental or horrible about her new friends. But whenever I mention meeting/speaking to someone, she's straight in with negatives.
It feels biased, I told her this, she disagreed, and says she like 'some' of my friends, but they're the ones, she doesn't judge by a brief encounter and information she's heard, in this rural town, where everyone has heard something about everyone else.
I tell her this, and say "it's not a bad thing, i just take your information and judgement with a pinch of salt." - since most people she doesn't like she hasn't met.
She took it the wrong way, and has just went offline.
Now, Im sat brooding- and thinking - and not sleeping, thought writing it out would help.

I really hope everyone is doing well, - I am generally- situations like this are confusing for me, as i feel like i've missed a main point in the conversation and am missing something crucial for it to make sense.

Song over 7 years ago

Hello Foyster, how did the meet up go?

Your sister is probably being protective of you, but over protective, I don't know as I can't see the messages and know nothing of your history or hers.

We all make mistakes at times and we as adults are allowed to do this.
The Foyster over 7 years ago in reply to Cassandro

Me and my sister always get on, I messaged her before i slept, hate leaving stuff unfinished before sleeping, I've got this meetup thing this morning, in an hour and a half, and i hate cancelling last minute, since i'd hate it done to me.

I'll just see how it goes.

It's not even like I'm travelling far, or going out of my way, I made sure it was a situation i could control- I'll be fine.
Atypical is a hilarious show, I don't think it's like that though. If you haven't already, check out The Good Doctor, it's based on an autistic trainee surgeon. :)
Cassandro over 7 years ago

I can see why you asked your sister, and also why you wouldn't take her judgement unconditionally. Maybe she's had some experience of life but is still young. Did she ask to see the messages because she thinks you're bad at reading 'between the lines' and might have missed something? Or just curiosity? Can she explain what it is she doesn't like about the girl? Is there some particular fear she has? What does she think might happen? Is she somehow basing this on something other than the messages? Do you and your sister get on generally? Will you get a chance to meet up with your sister, nor necessarily before you meet the girl, but so you can do something fun and talk things through? Could what you said, about her thinking badly of people she doesn't know, have been perceived as an attack on her character, rather than a positive request or recognition of your strengths?

Maybe she's being over-protective. I don't know your situation and am probably imagining something from the sitcom Atypical.

It'll be fine. Just don't expect people to make sense.