I have a "friend" who doesn't make plans in advance but text or calls to get together that day, sometimes to join her wherever she is. I started to turn down her invites and said I needed at least 24 hours in advance. To model the behavior I invited her to meet at a local wine bar in a few days. That morning she texts and asks, are we still on? But at the exact time we were supposed to meet, she calls and says she's very sick, providing great detail about how she threw up, etc. I'm kind of curious whether she was telling the truth or just wanted to get out of it for some reason. But the real question is, how do I end this friendship and find better people, people I actually like and trust? Note: we are both senior women.