I would accept her invitation with no expectations. As Bustingout put it, I wouldn't want to have regrets later.
However, I'm not the one making the decision. I can speak for everyone when I say we care about you and your feelings which is why I'd be conflicted to suggest that you go.
I'm reading between the lines here, but it seems as if you really don't want to go yet there's this little part of you that is still wondering if it may not be such a bad idea.
On the plus side, I believe you are taking your time to think long and hard about this which is great. We strive to maintain our serenity which is why I applaud you for thinking about this before committing yourself.
Take care V.
M 42 H 39 T10 (-2yrs separation) S8 D5 DD 7/30/11 (EA&PA) Reconciled 6/2013 Separation in works 1/2017