I think my maid is practicing black magic on my family. What things should I be looking out for? She is Filipino.

I think if you already suspect this kind of thing, you should send her back already.. By the time, things happen, i don't think you will be in ok mood to think what to do also. I watch movie (not sure true or not) that by obtain ur hair or anything from you, they can get ppl to do black magic that harm to u or ur family. So best to send her back asap if u think somewhere goes wrong before something happen.