In my opinion I think the moodiness is from the untreated anxiety. Anxiety has control of a lot of things (personality wise, attention, mood, etc) and it can make someone extremely agitated as well. My gf when she has really bad days with her anxiety she can be a bit snippy and moody.

My suggestion would be to talk to your doc about another anti-anxiety med and once you get that under control maybe it will help with the moodiness.

Just my two cents...