TM, A tupperware party? Sounds like she was hoping she would take the bait and reply to her. I can't even imagine a tupperware party at a hotel unless it's a very large party. Your friend's response was good, but I would advise her not to be sucked into your xw's drama and do not respond to any more texts or calls. In fact, your friend may need to document the calls just in case she needs a restraining order at a later date. Don't be surprised at anything a panic stricken mlcer will do!
There are several ways of getting someone's number if you know how to google and want to pay a minimal fee for the information.
I'm glad you are moving forward...it's time!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.