Hey there @Pillow … that's rough, I'm sorry. Life has a habit of throwing everything at us at once sometimes, doesn't it?
Since you still have an appointment with the current counsellor this week, have you considered talking to them about your issues with the old counsellor, that you've dealt with them before, you don't feel they are right for you, and ask her if she has any other solutions or suggestions?
It can take time to find a counsellor that works for you — and most counsellors understand that. The returning counsellor won't take it personally, and the one who's there now should understand things can be that way. So, there's absolutely no harm in asking the current counsellor — or even the old one who's returning — what your alternative options might be.