question: 51 yr old female w Glioblastoma ( end stages) - on Morphine30mg sq q 4hr ATC w BTD of 15 mg q 1hr PRN; Decadron 4mg sq BID; Haldol 5mg sq q4hr ATC; Ativan 1 mg q 4 hr ATC. ----still unable to control her agitation,hallucinations, and restlessness.  any suggestions ??