Poor communication from mua

I am getting a little bit nervous about the MUA I have booked for my wedding day. I booked her a while back and she reached out to me about a month ago asking me about doing a trial. We set a date, and then two days before the appointment I reached out because her site did not have an address. I asked her about the location and she did not respond until the NIGHT BEFORE the trial, canceling on me with an odd/lame excuse. It seemed to me like she totally forgot about the appointment. She told me she would get ahold of me when she had her first opening saying i would be the first client she'd take. Fast forward a couple of weeks and she has been plastering all over her social media stating how she has a bunch of openings. This is extremely off-putting to me. She was very responsive when it came to booking the date and when i was in the process of signing the contract and paying. She required a 50% payment of the services. I have a large wedding party so I gave her quite a significant amount of money. I really don't want to have her do my makeup at this point. She has good reviews and her work is very good but communication and being valued as a client is important in my opinion. Ive had people telling me to reach out about seeing how she has openings but i shouldnt have to beg someone to do my makeup. And with her having all of this time to post youd think she would have time to remember my trial. I feel like its going to be awkward now because I think shes rude. My wedding is coming up and i dont want to be stressed about her not showing up or something. I reached out to a ton of mua before booking her and everyone was so booked already. What do i do???