@igazor Don't worry, she'd still have plenty of excuses at her disposal, such as, "I have to drive my aunt to the doctor," "The cable/repair/maintenance guy is coming and I don't know when," and of course, "Sorry, I'm reorganizing my closet that night."
But perhaps best of all, "How about you come over here instead? My girlfriends and I are getting together to drink white wine and watch a Real Housewives marathon, and we'd absolutely love for you to join us!"