Relative with VD. Seems to be OK during daytime, memory good although has poor mobility. But late afternoon and during the night she starts to get worse. She's up allnight going to the toilet (rarely ever passes anything) but it goes on all night long and becomes very disorientated eg, doesn't know where she is, can't find her bedroom etc and during daytime she seems to realise she becomes very anxious at night but the night comes and it starts all over again! She has a wonderful husband who cares for her but he's exhausted! She won't allow anyone but him to care for her and won't let him out of her sight! So, in short, great during the day, terrible from late afternoon on....an suggestions?