It felt a little rushed, it was a bit too fast from "I'll leave showbiz to be with you" to "I'm past you, I wont leave showbiz also" and later "please save me" to the final "lol, jkjk I left showbiz".
Also what happened to her father?
I can't see Isshiki in the wrong here, even if he chose to...
I'll just wait the TS guy do his work.
For what is shown right now she wouldn't care to let her career tank if the result was her marrying MC-kun, although it would happen at a faster pace than she wanted. Which means MC-kun is the one overly guilty consciouness over this.
Even as a little-girl...