office politics

new betch at work: Hi my name's *forgotten already*
me: Hey I'm Julia. Do you wanna work here at this desk, and I'll go into the other room, I have some study to do.
new betch at work: err ok then. When are you going on lunch?
me: Not sure, maybe like 12:30/1pm-ish?
new betch at work: Well you should go at 12:30 so I can go at 1.... how long do you get?
me: Half an hour. Yeah I'll see how I go with my work. So I'll leave between 12:30 and 1.
new betch: Well I'm leaving for lunch at one.
me: But we can't both be gone on lunch :S .... (no one will be here)
new betch: Yeah so you have to go at 12:30.
me: *glares*. I'll see how I go.

She only started just work at 12pm. I spoke to her for 2 minutes and want to push her over in the mud already.