Keep in mind that although you might remember her, she may not remember you, especially if you had not seen her for a year. She likely has many clients.
I think, if you send someone a number of messages, then follow up with something like " if there was a reason you didn’t want to see me", that will almost certainly be seen as confrontational by most people, not just SPs. SPs have to deal with a lot of negative personalities routinely, so if you send them a text like that it is very likely that they are going to see you as another one of those negative personalities, and that will immediately get her red flag radar into high gear. Once that happens you are tainted, probably for good.
So just don't do it. If she does not reply then move on. It is not a personal offence and having a reply to your liking is not a right.
For the record, if I send a text, or leave a message, and don't get a reply, I move on if it's someone I'd never seen before.
I had seen this SP about 6 times over the last 3 years & we knew each other, and her responses were fairly regular, and I wasn't enquiring about a time, just if she was available on weekends.
I recently had asked another regular why she hadn't responded, and she sent a hilarious reply about all the goofy things that had happened to her, which is why I thought I'd ask this SP, never expecting such a brutal reaction. Also, I was enquiring because something had changed about me, which is why I was trying to make sure she was still comfortable seeing me. Again, not expecting anything but a direct, but polite response, either way.
I could have posted her name, and a review as a non-appointment, but instead thought I'd share as a story, rather than a slam at an SP maybe dealing with other things.