Saralyn,
I honestly feel sorry for you hun, your caught in a rough spot. Although, it is up to your foster parents to make sure you are emotionally well just as much as physically well. I can understand you not wanting to go back to a group home, but what your foster mom is doing is trying to deter you from letting anyone know what is going on with you. But from your post your social worker is already aware something is, if she is pressuring your foster mom for you to seek therapy, she is basically telling her, it is her responsibility to make sure you get transportation to see somebody, the more she puts it off, they may feel in your best interest that the home you are in now is not meeting the standards of your well being. What you feel is hidden in all actuality is known, and it is a matter of time. You are deserving of a caring home, one that meets your emotional needs, you are a person of worth, and this needs to be reinforced with support. By all means if you feel most comfortable with your school counselor, tell them, print this post thread and show it to them.
Trish