This wolf is actively pupsitting - her energy regeneration is paused. This wolf has not rolled over today and will not be able to be traded or gifted until its next rollover.
Nixie is the packs Water wolf, also given by her name. Willow welcomed her into the pack when she saw her alone in search for water. Since Willow's pack was quite close to the lake and had plenty of moist plants and areas, it was a perfect spot for Nixie.
Willow noticed how good Nixie's personality was towards the adult's and pups of the pack, so she decided to give her the pupsitting role.