She made it soon enough into Twilight’s unofficial second bedroom. Looking around didn't reveal much, just an orange mare in the background. Breaking the quiet, she called out, “Yoohoo! Twilight?”

Heh, apple jack is background pony

Cadance chuckled nervously. “Well, I know how obsessive you can get. I thought maybe you took them from ponies while they were sleeping.”
Laughing, Twilight fixed Cadance with an uncomfortably long stare. “Hah, no. I only do that to the ponies who resist.”

“Gross. Maybe a different Changeling, but her ? No.” He looked at Cadance now with the same spark in his eye he always had when he was about to nerd out. “So, you really aren’t put off by the incest thing?”

A sassy Milf!
Shinings taste is questionable

11849680
While I like the idea of a Cadance, Shining, Chrysalis throuple, I don't think it'd be realistic.