~465,000 legally verified signatories to the federalist petition to declare Alberta permanently part of Canada
~360,000 status First Nations persons within Alberta
~330,000 legally unverified signatories to the separatist petition to hold a referendum to separate from Canada
First Nations have successfully argued in court that as consultations with them are required by the Canadian Constitution, no such consultations had even been suggested by separatists.
Apart from the fact that the Alberta population is ~4 million, it is difficult to see how separatists can figure they'd win a referendum to separate.