SL Theory - Cadance CM Glowed in S3E2

Theory idea I had wondering why Cadance's Cutie Mark glowed towards the end of Season 3 Episode 2 when she saw/had hold of the Crystal Heart. This video is also up on my youtube page as well. Hoping the audio doesn't mess up then again it may of been my speakers with my previous video.

I own nothing of this video except my voice and idea/thoughts. My Little Pony: Friendship Is Friendship belongs to Hasbro so all credit goes to Hasbro, Laura Faust, DHX, and everyone who makes FIM possible to be aired on The Hub.