The Tab. Sizodon is Resperidon (Atypical Anti Psychotic) which sometimes causes tremors, rigidity to avoid this Tab. Parkin which is Trihexyphenidyl
(Anti Cholinergic) is given along. Now, Parkin can cause dry mouth. Rest of the symptoms you describe can be of Depression
for which I presume she is taking Protheiden. Alzolam should be able to control her restlessness
Contact your psychiatrist
and see if she can be changed on some other Anti Psychotic instead of Risperidon such as Oleanzapine, Aripiprazole
or Quitiapine which may not require Parkin to be given along.
Hope it helped, Feel free to direct any more queries this way.