Auroragirl, I am a nursing home nurse but have also had family in care so have been in your situation.
Legally, we cannot give any medication that is not documented on the medication administration record (MAR chart). That includes paracetamol and any medication that you have handed in. Some homes have a "homely remedies" box for simple painkillers, laxatives, gavisvon etc but not all health boards or nursing home companies will allow us to have one!!
But if Mum has been in the home for 10 days, the staff will have had plenty of time to get her prescriptions confirmed by the GP.
We have many residents who cannot use the buzzers, hence floor beams, pressure mats both on the floor and on the bed/chair. And by law there is a minimum number of comfort visits ( checks to see if sleeping, needing anything) to a resident per night by staff and this is increased if they are very confused/agitated etc.
Can I make a suggestion? And we had to do this with my Mother-in-law ask the staff to put your Mum's phone on charge at night and increase the number of checks that they do. You need to get sleep and in the nicest way possible if she is confused it is not fair on extended family if they are also getting calls in the middle of the night. Allow her time to settle into her new surroundings and give the staff the opportunity to reinforce call bells etc. They will have other options available
It is hard to be the relative of someone in care; but you need to get some rest!!
If you want to ask anything just pm me