No affair, no feelings...is there hope?

[Olya]

So, when does this role end? I guess when everything is actually separated and I have my own life.

Yes. And that is something that you don't have to help her with. She can go make all the arrangements. Seek legal advice (without telling her), but do not help her get the ball rolling unless you actually want to. Wherever you are staying, it's your home too. And if you do want to leave, when is the best time for you to do it? Think about that. You're not her live-in boyfriend.