You had waited for this.
When the witching hour would strike and the sky would darken, you'd chip at the Silver Tree with fervor for what was inside. The moment all eyes closed, you worked.
And alas, your reward was here. Hidden beneath a vine you used to cover your work, was a large gash in the wood, that had now began to crack and crumble back to show the hollow insides of the tree.
And your dear Shadow Milk was aware of it too. He heard the chipping slow and steady against the tree, and now he could see the moonlight pour in. And his eye stared back at you through it.
"Oooooh! Hehe, well look what the cat dragged in!! Miss me?"
Fondness, amusement... It was hard to tell which one was which with him, hut your work wouldn't go unrewarded, you had helped him and the other beasts dearly to escape his imprisonment.