Couple things…
I’m fairly certain Twilight could do the Moonshot Dive. Trixie may be better at stage magic than Twilight, but that “trick” does not involve any tricks, just one precise teleportation. Which Twilight is really good at, unlike Trixie. Twilight just does not want to get eaten alive (she’d probably imagine the manticore being a huge quesadilla).
Another thing. I know the comics aren’t always considered canon, but Trixie did go to the gifted unicorns school. Therefore she should be fairly powerful at magic. Maybe she dropped out because the school was too boring for her. She didn’t care about the long lessons about how to boost and tune your magic. She wanted instant gratification and found it from stage performances, who knows. But even getting accepted into that school means you have to be naturally good at magic. There has to be more to her than just illusions and stage magic. I’m 100% certain she could teleport just fine if she just studied it a little.
Any thoughts?