I’m sorry to hear about the lack of support where you live. It can be hard as well when you have your own depression. Many members are in a similar boat in this community and don’t have access to care for anxiety/OCD. You can teach your daughter the skills directly if you have the ability. The first step is to get the help you need for your depression. Often doing simple things can be a struggle when we are depressed, let alone helping others.
I’m happy to support you one step at a time here in the forums. I would recommend, when you are ready, to take the OCD course you have free access to as a member (if you haven’t yet). https://atparentingcommunity.com/online-classes/
Disgust is an OCD theme. The core fear is really just about feeling like you can’t handle the feeling of disgust. I am wondering if that is what is going on with the tiles.