Thanks for posting a query in health care magic.
suddenly is not a very right decision, but then the effects of stopping zoloft suddenly generally appear within 1wk and if the timehas passed you need not worry about the sudden stopping. Zoloft can cause increased night sweat and reduced sexual drive and if that is the reason for discontinuing, then she can always be shifted to some other antidepressant like bupropion
which do not have these side-effects.
Do talk to her, and convince her to see a psychiatrist
Hope I am able to solve your concerns.
If you need any further details, you can contact me directly by using the below mentioned link:
Wish you good health.
Dr. Srikanth Reddy M.D.