Hello, I Have Recently 'acquired" My Youngest Sister 65, Who

Hello, I have recently 'acquired" my youngest sister 65, who at one point did not speak to us for 20 years. She has very severe COPD and is panicking about absolutely everything. My son is an anaesthetist so I rang him this morning, in desperation, to ask if I could give her one of my Zolpidem Tartrate which I use from time to time. He suggested to try a half and it is working at the moment. She is virtually walking the walls when awake, and is very stubborn. She has been prescribed 2mg Diazepam and after half an hour is VISIBLY improved - doesn't want to take it in case she gets hooke. Do you have any helpful suggestions? NB Se has been living on a fag, glass of wine and coffee for a long, long time but I didn't ,know state of house as was never allowed in. House is house of a hermit! Thanks, Gill Purdham