I think the issue here is that I haven't gotten legitimately angry. I do my best not to at work because I have anger issues and I try to keep them under wraps. I get frustrated, yes. I've had anxiety attacks (because OCD), yes.
The issue is that this girl, I think, is trying to cover her own ass and get me out the door before she loses her own job because she keeps fucking shit up. And our boss fucked up ethics rules shit and she knows a few of us (because I'm not the only one tired of her shit) are on to her fucking up.
Because she's fucking up at her job and at the same time: she has an ego issue.
She's the one who will try to interrupt the call you're on to tell you 'oh you should do this instead' and be wrong.
She'll try to interrupt the chat you're having with management to make a suggestion... and be wrong.
She'll be the one getting into an argument with a user about 'NO IT NEEDS TO BE DONE LIKE THIS' ... and be wrong.
But a few weeks back, I was following up on some of our new hire work and came across one that was due the following day that she'd marked 'finished' and found.... she'd done about 10% of it. So I (privately, ofc) went to our team lead and told him. I showed him what was up so he could sit down with her and re-train her on how it should be done and then I went in and fixed it all that night.
Next day tho, our boss was all (to the ENTIRE TEAM) 'You two need to learn how to get along! You're always complaining about her and she's always complaining about you!'
That was the first time I'd ever made any actual 'complaint' and it wasn't even. It was a 'Hey, this is a big problem and if the client had seen this, it'd look bad for our whole team.'
But our boss doing that was like, a huge fucking ethical NOPE. I prob shoulda gone right to HR but I am so strongly a 'don't rock the boat' sort. 
I know another guy on our team (who DOES get angry: this dude will put people on mute to cuss at them/the situation/anything >.>) who is sick of her shit and will leave me email rants about how he wishes she'd just shut up and stop the ego trips.
So my guess is: she went from 'yay, another girl on the team!' to 'queen bee' trip once I 'got her' in trouble even tho I was trying to cover everyone's ass and I kept that shit confidential (it was the boss' fault it got made public).
But then again, there's the whole 'she's always complaining about you' aspect so maybe she had that issue all along. 