You will be okay. You need to enter the next phase of this thing we call D-I-V-O-R-C-E. Gain some strength. Trust yourself. Take control over YOUR life. Do what you want with it. Stop worrying about what you should do-do what ever the hell you want to do.

Choice 1-okay so you suck it up and take her. Put a big smile on your face, be polite and don't talk about the divorce while you are there.

Choice 2-Or just drop her off-make nice with the parents, say thank you, leave your cell number and show back up on time.

Choice 3-you don't like these people, don't go. Why put yourself throught this bullsh*t.

Only you know what is best for YOU.

Me personally-if I was in this situation I would not go.
I would ask my son if he wanted to go. If he did then I would tell my ex to take him and drop him back off after they were finished. I chose the NO BULLSH*T route. Going to the party and staying there with people you don't care for-is just going to make you feel worse.