Should I respond or should I talk about how it makes me feel real horny?

About 6 months ago I was refered to a Physio for my wrists by my Doc. After 4 months, my wrist came good and we have found out we have the same friends and have the same social attitudes. Then I told my Physio about my shoulder pain and started work on the shoulder once a week for the last months. During our session we talk about like and dislike and when I mention her partner,she avoids talk on him. During our first session on my shoulder, she bushed my bum (I was wearing Compression wear pants, no top) with the palm of her hand and she responded like"why on earth did I just touch up a client"with a surprise giggle to herself. I didn,t say anything thinking that she just bush up against me by mistake , until I saw the surprise look on her face. Today we had another session and I mention that has she got anyone at home to rub her aches and pains and she avoid a direct answer, only to saying that only her hand give her a bit of trouble which is bull because she put alot of effort in to fixing me alone. Well about a minute afterwards while rubbing my shoulder she start on the side which in response to her touch, my hips press down on the table has the same action of having sex. this persist for about a minute making me semi hard. Now she places my forearm between her upper legs and clamp my forearm about 10 inch from her crutch. To get a better picture I was laying face down on the table about 1 meter off the ground, with her seated on a foot high stool to my side about at the small of my back. She start to rub the top of my arm in a pulling motion in a downward motion toward her crutch making my arm move 6 inches closer to her crutch. By now I am hard and I start pushing my arm toward her crutch with every downward motion until my arm was about to start bushing her crutch which I am sure it did. She stop and open her legs to release the gip on my forearm put my arm say motionless.stuck out in a 45% position from my body only 1/2 inch from her crutch then ask me to relax my arm . So she must of felt me pushing my arm towards her crutch . At the same time she ask me to turn over on my back to finish off my shoulder. I am still hard so I do so slowly but not slow enough. So I am on my back with nothing but compression wear pant. So the only way not to see the revealing rise in my pant is to be blind. While laying on my back she rub my shoulder for about the same time it took for the rise to go down. She start telling my something about my skin being easy to faring, but I have still got my head clouded with what just happen. She tell my came into the bathroom to look in the mirror so she could better explain. She enter first into a room not very big. I am thinking should I make a move but I could not bring myself to look her in the eyes fearing that "IT OK CAME AND PULL MY CLOSE TO YOU, look. This was hard to do while she was talking to my about stretching which I should do daily and finishing up the session. She always make the booking on the only day her desk person is away. If this happen next session should I make a move or should I explain to her that during the last session I got hard and confuse because she a really good Physio and if I did make a move, would it put at risk our client physio relationship. I 50 she is 40 we both have nice bodies