My wife also....intercourse is not painful, but sometimes difficult.
Solution was simple, tanks her gyno....my wife has to insert deeply in vagina a gel with an applicator (similar a big syringe) about 20 ml of this gel every evening.. It is not estrogen o estradiol, bat water and glycol based (safety and anallergic) It is not uncomfortable....only little burning and emptyness sensation...after a couple of months all the way become better
Here in Itali is cheap and named ACCAERRE.
Try it, if you find it in your country....