Prior to becoming an RN, I completed my Master's Degree in Clinical Psychology and was working towards becoming an MFT. You would need training and qualifications to do talk therapy with your patients, just as you did when you went to nursing school. I think holding both degrees would allow you to treat your patients in a more complete and efficient way. Plus, for them, it's one less appointment they have to make if you can meet multiple needs! I'm hoping some who might have done this chime in!