Ever since Milly was introduced to the tunnel toy, she's been obsessed, bouncing and pouncing around in it with her unbridled energy.

"Milly is so sweet, loving, and trusting. She is a vivacious and joyful girl who spreads that joy to everyone she comes in contact with," Caroline shared with Love Meow.

"She deserves the chance to live a full and happy life, so we are going to do everything we can to give that to her."

When Milly is ready, she will have brain surgery to drain a cyst and implant a shunt to drain excess fluid, giving her the best quality of life.