Some people are just clueless and tacky and she sounds like one of those people. I think it's terrific that you CHOSE not to lower yourself to her level and just ignore whatever intent is behind the invitation.
That shows a sense of maturity and growth that I'm sure she wouldn't understand.
Let's have a GO YOU!
Hugs,
Bets
"There are only 2 ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."