Monica, I can see that your plate is very full! At Johns Hopkins, counseling services were offered free of charge (I don't know about your program, however). I think it's very sad when money gets in the way of our health choices...you should have the support you need - even as a single mom (maybe ESPECIALLY as a single mom) to connect with the health programs you feel you might benefit from (and along the way, your children will benefit too)!
Good luck with the remainder of your program! I remember just how hard it was for me (mom of two, but married with a supportive partner). Keep in mind how important that MH counseling will be for YOU as you go out into the MH helping field! 