With an APS-C camera, 50mm would be better. It's still telephoto but shorter. It will allow you be within normal conversation distance to your subject. This will still allow you to work with studio lights if ever. A 35mm would be standard and bring you much closer to your subject to within bedroom voice distance. Not much room for lights to work with though but feasible outdoors with sunlight like when doing tourist and vacation shots.
With full-frame, the 85mm is already ideal but if you want closer, the next thing is the 50mm. That would be standard (as discussed with the 35mm above with APS-C). Using the 35mm, which would be wide angle, would introduce distortion all over the face that the subject may not approve of (she'll look fatter).
Now, if you meant you want the pictures to appear closer than what you are getting with the 85mm then go for a longer focal length like 135mm.