Would this annoy anyone else or am I being insecure?

we’ve only been friends for a few months but lately I feel I’m seeing her in a different light. If any of our other friends brings a guy around she gets super friendly with them and she starts trying to make herself look better than everyone else and tries making their jobs look shitty. She’s the part time assistant manager at a clothing retail store and is pre law at a community college but she always emphasizes her being pre law even tho she’s been “pre law” for the past 8 years. She never tells them her actual job tho, just that she’s pre law. She acts like a know it all also and just makes it a point to be the main person and most “confident” in the room when men are around. Would this annoy anyone else or am I being insecure and harsh? I don’t have a lot of girlfriends so idk if this is how women normally are? I keep to myself so I’m not use to this. I almost don’t want to bring anyone around her or even stay friends but don’t know if I am over reacting? She’s looking for a new job and asked if mine was hiring and asked how much I made and then made it seem like I make shit money (I don’t). I’ve never commented on how much she makes but she expects to make an extreme amount of money with no experience.