She has roaming and agitation issues. Anyone have any experience with these types of facilities. She is on Seroquel. Her present condition is a side effect of Alzheimer's and also the drug Seroquel. I don't like the idea of them trying all kinds of drugs on her. Bad experience with Haloperidol.
Maybe some day we can examine blood or stands of hair or spinal fluid and say, "Oh this patient won't tolerate A, B, or W, but drug C should be OK." We are not there now!
Having a really bad reaction to Haloperidol is a diagnostic symptom for Lewy Body Dementia. Has anyone mentioned that form of dementia to you? LBD can often be helped by medications, but there are a lot of sensitivities also. Best any trial-and-error be conducted in a safe environment.
In the bad old days when my aunt and uncle worked at an insane asylum, the way disturbing behaviors were handled was by physical restraint, such as being strapped to a bed or wheelchair until the behavior passed. I guess straight jackets were an extreme case.
Law does not permit physical restraints to control behavior. But the behavior still needs to be dealt with. The modern form of "restraint" is medication. Maybe some day we'll have far more risk-free and effective methods, but right now it is what is available.
My heart goes out to you. Having a spouse with dementia is sure not how we pictured our sunset years, is it.
BTW, before allowing your wife to leave the memory care facility, get it IN WRITING, that her room is being held for her and that they will accept her back.