The word used is the Cree personal pronoun (e.g. niya for first person). The possessive element is a prefix (e.g. ni- for first person) that cannot be used independently.
The dependent possessive would have a French possessive, e.g. ma liivr [1SG.F book] 'my book'.
The independent (Cree) personal pronouns are used in elliptical answers, in predicative use and in anaphoric use.
Source: Fleury 2007
Source: Fleury 2007
Source: Fleury 2007
Source: Laverdure and Allard 1983: 362