I would certainly try making an inquiry and notify them of the situation. Try to get a phone where she has to press a number before dialing out like in an office.
Please seek some help as it will only get worse, does she need a carer or to even go to a home, my fathers home had some very nice nurses from the UK, Jamaica, Thailand and Bangladesh. they offered a level of care me and my mother could not have given my dad, the downside is travelling to see you loved one. Start thinking about power of attorney and getting a separate as well as their current joint bank account.
If you need any further help I'll do my best to offer it. Nasty illness that gets far far less funding than cancer.