Okay. I get that. Friday appointments would probably be prone to that I'd think; kind of likely Monday appointments with all the legal holidays. Certainly worth talking about and perhaps looking for a solution. Maybe a different day, or earlier in the day on Friday if the cancelling seems to be the result of her starting her weekends early or maybe she has meetings? Just guessing. If these are cancellations she can foresee, asking for a bit more notice so your appointment on those particular weeks can be moved might be an option.

You need to be willing to find a compromise/plan together. Are you willing to do that? Remember, her cancelling ISN'T about you; it is about her and her schedule. She isn't making a comment on your worth by her cancelling. She doesn't say, "Let me make fixated feel like a second class citizen today. I think I'll just change her appointment to show her how worthless she is." You know that, but you feel something different. Explain that to her so it is out of your head and into hers, and then find a way to work with it/around it, and choose to move on -- to the scrapbook.