not really knowing anything about sexual trauma, it may be one of the steps of healing to want sex without intimacy and that's why her therapist hasn't addressed it. The life threatening stuff you need to make a code word for if it's too much or you need help, but I would not recommend you do anything that rears towards what happened to her. bad idea. I would tell her it's ok that she doesn't want to be intimate about it and do it just the two of you anyway with the lights down low, not off, not super touchy and kissy, though not a stranger, and focusing simply on the feeling. if you can do that, she might become more comfortable with it and be able to further her progress with overcoming what happened. You can look at kinkier stuff to do after you two are completely comfortable, trusting, and she is mentally prepared.