You could say that. [ Familiarity is another reason, but she won't speak so boldly of her siblings right now. ]

Each of the Dragonsworn have had magical power bestowed upon them, a blessing, from each of their Aspects. This power is found commonly enough within their sworn sanctum which should make it easier to learn to use.

[ There are other abilities she has given her own, but who knows what her brothers and sister have done? ]