You could try a wrongful death (person injury) attorney because they will be able to request hospital/nursing home records to figure out how/when/why/where your mother died. This information should not be kept from you by any means. Sounds sketchy to me, I would def. call around for an attorney ASAP.
your local government ask for certificates/birth/death…
using your id you should be able to get the death certificate..
i heard you need about 3 copies..they cost $30 for each.
you will need for insurance info…You may need a probate
attorney .