Have a great time...do what feels right...don't have too much fun ignoring but don't hang on her either...it is so hard finding the "happy balance"
And really try and avoid taking the mood swings personal...as a woman who is entering that menopausal period herself there are times when I react, say, or lash out with stuff...and at the same time inside I am thinking "What the hell are you doing?"...and I still can't seem to control it...sometimes I get SOOOOO emotional it makes me angry...and it really has little to do with those around me...but it seems they catch it...so really, don't take it personal...just be as gracious as you can about it...she is hatin' life right now...I can tell you that much...