She had an excellent point, but as Trixie mulled over the possibility a problem came to mind. She was distracted however by the explanation of Nico's powers.

"You...bleed for it?" Her face screwed up in concern.

"But...only a little?"

Still blood magic was some of the darkest magics written of. Trixie had never even seen such magic, only read about it in her quest to overthrow Twilight Sparkle.