Since W has invited you to her little sauna room, it tells me that she's comfortable with appearing naked in front of you instead of sneaking behind your back and dressing in the closet. This would be a good time to dip your toe in the water and do some light physical touches like her arm, back, shoulder. Watch and observe how W reacts. Then adjust accordingly.
Nice going....I think W is slowly re-integrating herself and coming out of the MLC fog.
