I agree with roller coaster that giving her another chance might be a good idea. It’s difficult to schedule things with strangers as we have no idea what’s going on in their lives. Of course eventually you would have to give up if she acts this way repeatedly. But you don’t want to go from one extreme of attaching to wrong people to extremes of cutting it off quick. I’d try one more time. Make one more mutually agreeable plan and then if that falls through, end it