Babysitting drama 😭

Just looking for other mommies opinions because I’m pretty torn. (Names are changed, just used names so story is easier understood).

If you had a sitter, that seemed like an okay fit to this point but then the following situation happened how would you feel?

Our sitter (Vickie ,17, doing virtual high school and watching Our kiddo in the afternoons after her schoolwork is done) seemed very responsible and during our interview told us her mom was supportive (her mom even dropped her off), and she very much wanted to work with us, and she was CPR certified, etc.. Fast forward and she has watched our kiddo three times and they seemed to go okay (although we can tell she is just a little less engaging than we’d hoped, but that’s something we could maybe talk about and work on)..

Today, however, her mom randomly messaged me on FB (never spoke to her before or anything) and told me now wants me to send her what days I’ll need Vickie to babysit because Vickie has been lying about when she’s working and is actually hanging out with friends... personally I’m torn because I feel like 1) if she were working somewhere like dominos, her boss would not text her mom her schedule every weeks 2) I don’t want to be caught in the drama between the two of them and 3) I’m worried because if she’s lying to her mother that frequently, is she lying about things that happen in my house? 4) I know she’s a teen and this is all learning experience but my kiddo just this last week was officially diagnosed with autism, so I’m juggling appointments, working part time and taking classes, all while my husband works as well. I need someone reliable and drama free going forward and I’m not sure if this situation is a red flag or not.

would that be a deal breaker for you? How would you handle it?