<human>: Could you distill the essence of the text into 1-3 sentences?

I want to address this first as we have a great relationship and she makes me really happy. Today however, Girlfriend is a bit more snappy and rude but it's also probably due to there being drama going on in her group of friends. My question is i'm somewhat angry and stressed by my work and I don't want my emotions to get the better of me. So how do I go about bringing this up in a calm way. Do I do it right away so as to address this behavior? Do I wait a little for the drama to unfold and get solved? Do i play by ear and see how it is affecting her and then see what to do? Any help so that I don't end up saying something I don't mean would be greatly appreciated.
<bot>: Girlfriend is snappier than usual today, I'm annoyed. How do i bring it up in a constructive way.