You need your client confident and relaxed to ensure she gains the most out of the treatment. It is her treatment, she is paying for it, and it is her body.
If you are not used to working with clients who require draping and/or leaving underwear on then see this as a learning experience for you. She will not be the first client you will treat who is nervous about nudity or areas of their bodies.
I had a client who kept her bra on for the first couple of treatments and another who wasn’t comfortable having her abdomen massaged and then there are others who can’t wait to get it all off.
I had a client once, when I was training, who insisted she kept her skirt and tights on for a back massage! When I talked with my tutor about this, while the client was getting on the couch, she said it was ‘her’ treatment and in a paying situation up to me to work with such requirements, OK, the glutes weren’t worked properly but boy did those traps get a good seeing to and very pleased she was too. Horses for courses.
Build your client’s confidence up over a couple of treatments, explain your needs as a therapist and how you can not work a certain area as well if it is covered. She is then fully informed and will either relax with you over time or will accept less work in that area, 9 times out of 10 they build confidence in you as a therapist and work to your requirements. But do be confident in how you are going to deal with this client, because your nervousness will come through the massage otherwise.
RxXx