... but so far she's been quite quick to learn how to use her new powers.
I'd think now it's time for a "cool rescue" by the girlfriend.
This would also be fine, but after her declaration in the previous chapter, it would be even better if we were to move beyond Komari always needing to be rescued (although nothing wrong with some that as well from time to time when a true boss character that only Liberta can handle shows up).
As for the current state of the fight, I do wonder how exactly Komari's tail functions (and the wings as well). If they work similarly to the weapons made of blood manifested by every other character (and she certainly didn't have any while walking through the town before), escaping this situation would be as easy as dispelling the tail. And, of course, nothing says the tail blade is the only weapon she can use.