SWR: Friend Vent

I am LIVID.
My Bridal Shower was sunday. (Yay)
At my 'friend' table I sat a woman that I used to work for -- she is a partner at a law firm -- and i sat a friend from camp when i was younger 'B' and a friend from nursery school and camp, 'R'. Well B and R were friends when they were like 16 but lost touch. B knows i am friends with R and always complained that they aren't friends. R didnt really like B. Ok B is a lawyer that hates her job.
Soooo... at my shower, B comes over to me and says 'Is it ok if I ask your friend (the partner) if she can hire me?' I looked at her and just kind of gave a blank look. (Really, job hunting is not what she should be doing at my shower!)
Then I turn around and she is talking to my older sister and like ATTACHED to her. My sister tells me later that she asked for my sister's email and asked her if she could get her a job at her law firm!
Then, I get an email from R today telling me that B emailed her and asked when they could make plans!
EEEW First off, my shower is NOT a networking event. Where the heck did she think she was, Court? A Bar Event? what is WRONG with her. Like my closest friends and MOH have nothing better to do at my shower then help her get a freaking job?
Secondly, how dare she come to my shower and become this disgusting social leech. She came and sat with my friends, this does not give her the right to essentially make them hers! Does she not have ANY friends? I HATE people like that. It is nice to have different groups of friends. I went to her wedding chatted with people and left. I did not get emails and make buddies. Meanwhile -- she hasn't even emailed me ab out the shower but she is connecting with my friends.
I am so peeved. I want to call her on it. I want to write an email and just say 'did you actually ask my sister for a job at my shower?' Ugh. It is so awkward no R feels funny because she is going to see B at the wedding and how can she not respond to the emails and attempts to go out? what do you do here? am i wrong for being angry?