Im just wondering because shes such a huge authority figure now
She has the power of being snow-cold. See what I did there? Yeah.
If you means"supernatural power",no.
her power is her personality and wills(and sword fencing).
She and her sister are the daughter of a powerful sorceress and have tremendous untapped magical potential within them.
Their mom is a witch actually, as well as their aunt (Snow's stepmother).
She's essentially immortal due to her notoriety (She had half her head blown off in the comics), eternally youthful/beautiful, and a big, bad bitch.