Acadia

Will update with proper credit in morning.

Tail is a mini galaxy.

Takes care of dying and newborn stars

Often has ice crystals in fur

Thought to be a goddess of the stars. She takes care of stars as they die and collects the dust and remains from them in her tail. Once she has collected enough of it she then forges a new star from it.

Often times she ends up with debris from various man made objects stuck in her tail as well that make her weak. Sort of like her kryptonite.

In a loving relationship with Corona. Though they are far apart Acadia has grown fond of this young astronomer.  She doesnt show herself to just anyone but was intrigued by his tenacity to find life among the stars. She is the biggest reason he is thought to be crazy by those around him since no one else has seen her or has only caught fleeting glimpses and not believed what they saw.

Future kids are Nadir and Zenith. Maybe Horizon