Vaginal closing during menopose

Patient: My wife is in menopose right now. during an attempt at intercourse this morning i cuold not penetrate her, I am aware of vaginal drieness but inside her vagina seemed it had grown together about 2 inches inside. I inserted my index finger and noticed it seemed closed almost grown together. It was painful for her and i tried to open and it seemed like it was but painful for her. We dont have much sex because of the drieness issue. what could this be?