Thistlelight

In The Cream Colored Vixen
"Turtlepaw was born the youngest to royalty to King Sharptail and Queen Birdtail and was upset she had just a sliver of chance to be Queen. Turtleheart trained as a healer"

In The Gray Vixen
"In a Sky Kingdom dream, Thistlelight is mentioned being brought to the Dark Kingdom after Queen Turtletail became the leader of the Stone Kingdom."

Kin
Mother:"Birdsong as of The Cream Colored Vixen"Father: "Sharptalon as of The Cream Colored Vixen"Sisters: "Sweetfire as of The Cream Colored Vixen""Turtleshell as of The Cream Colored Vixen"

Names
Pup: Thistlepaw

Stem pup: Thistleheart

Full role: Thistlelight the Brave

Death
During the last battle between the Fire Kingdom and the Ice Kingdom (The Cream Colored Vixen), Sweetfire had attacked Thistlelight, but Thistlelight could've easily overtaken her. The only thing that saved Sweetfire from death was Dewy behind her dealing a killing blow.