Definitely puts her down as cool-headed in the face of douchebaggery, although it's a stark contrast with page 1-10..
Well, on page 10 of issue 1, it's the night of the breakup and she's alone in her bedroom. She's actually crying more from hurt pride and embarrassment (which will make better sense when more details about how she found the tape are revealed) than from a broken heart. But even on that page, some of her anger shows through with her writing "Cheeting asshole" with her lipstick over the photo of the two of them.
Now it's the following day, she's gotten the crying out of her system, and she's drugged up and has her best friend to back her up (not to mention ice cream), so she's more angry/annoyed than sad.
I loved this page so much that I called my GF a cute slut pig. Then we went out for ice cream. I had to use my car doors though.
I love this anecdote almost as much as I love your awesomely offensive name.