Smile, nod and walk right past her.
If she tries to stop and talk, smile, point over your shoulder.
"I'm meeting some friends, catch you later" KEEP WALKING!
(Note: "later" means "FVCKING
NEVER, B!TCH!")
DO NOT LET HER CORNER YOU INTO A CONVERSATION! You're meeting people, you're sky diving, you're juggling chainsaws, you're doing ANYTHING that prevents you from spending a single, precious second of your valuable time with
HER.
I also think this would be a great time to explore new places to go out. If you know she always frequents certain pubs & dance clubs. Find different ones to go to, even if it requires you to go to the next town. Expand those horizons!
Be strong Cactus! I know this isn't easy, but you can do it! I have faith in you.
