Hi, as a favor and without a fee I did taxes for a friend online. She had no bank account, so with her consent, I had the return deposited in my account for her. Was it OK for me to do this? Do I have to be an accountant or anything? I just wanted to help her. Im afraid that if we lose our friendship that she can somehow make this a problem for me.
Thank You.

Yes it's fine. You are not in a violation under the situation given. When you give her the tax refund from your account, make a note on the check just to be safe.