I especially like the NEAR ZERO mother figures (let alone biological mothers) that meet the following criteria in a disney original animated movie:
(1) Positive
(2) Alive

Always makes me think about how much focus the Father -> Child relationship gets and how relatively little the Mother -> Child relationship gets. Both are important and obviously the father can "leave" easier/more'often than the mother but Disney doing this with their characters always makes me think there is something way more to it.