One thing that nobody seems to be considering is how Dora's going to feel in, say, three comics from now. I mean, Jeph has written her as being a little inconsistent because that's just how people are. It makes her a believable character instead of a one-dimensional sitcom girlfriend. But there is one thing Dora has been very consistent about, which is that whenever her trust issues flare up, she feels smegging awful about it shortly thereafter because she knows she's been a bitch. She's exploded here in a major way, with various qualifiers (late night, lack of pants, unusually tender moment between Faye and Marten, etc) to explain it, but she's still the sensible and rational person she normally is. Which means that in about fifteen minutes she's going to cool down from her rage and start actually thinking about what just happened. And she's going to realise, quite suddenly, that she's been horrible to her boyfriend and best friend at the same time.
Now, old bitchy Faye would have reduced Dora into kibble by now with her bare fingernails. New, sensitive Faye seems more likely to curl up on her bed and feel like shit while blaming herself for what's happening. Either way, she's not going to be too eager to help Dora through the inevitable, coming realisation that Dora Done Fucked Up. And of course Marten is out on the town in his fancy new pants, so he's not going to be much help either.
The pendulum's gonna swing back and smack her right in the arse. And yeah, maybe she deserves it a bit after what just happened. But these are serious issues she's having, and something she needs to recover from, and when the blow hits Dora soon she's going to feel a million times worse than she just made Marten and Faye feel, and they won't even be there for her to apologise to... and as a Dora-fan (when she's not insane), I'm worried about how she's gonna feel, because this is going to hurt. Bad.