I would just tell her. I told my T that I was attached to her and we talked about whether it was a healthy attachment or unhealthy attachment. We both agreed it was a healthy attachment because even though I think of her often between sessions, I have never reached out to her between sessions for extra support. I always relied on my family, friends, and boyfriend for the "extra support" that I needed between sessions. I think if you told your T about the attachment, she could help you find extra support elsewhere (if that is what you). It helps to bring these up with you T even though I know it is scary. A good T will stick with you and work it out with you. Good luck.