Maybe, but then the game perhaps shouldn't have led with Milleuda, who escapes our first battle in the normal way: By turning around and leaving while Ramza is arguing with Argath. In that event, the game just transitions from the battle screen to the same screen, but with the generics gone and everyone in a set position that allows for Milleuda to escape. The game shows you that it knows how to do a diegetic escape, and then everyone afterwards teleports away using the actual teleport animation that characters with the Teleport ability use in-game.
Of course that scene was, well, an entire scene. It was important to the characters, trying to muddle through what had just happened in the battle. The key take away wasn't 'She escapes' but rather 'Ramza and Delitia ignore Agrath and let her leave', which yeah, none of the other scenes would have made sense for that.
I can't imagine the writers wanted to make at this point what, 5+ scenes of 'here's the blocking of how this character slipped away after/during the battle, but nothing else happens because there's nothing plot relevant to cover.'
What is the shortest actual-scene in FFT that isn't pre or post battle dialogue on the battle map itself? With what we've seen so far, it's hard to figure out.
Maybe the scene in which we meet Alma and Tetra? Or the one where Ramza rescues whats-his-name silver hair guy?
Wait, it's the one where the party gets to Lionel Castle. Which only really exists to draw attention to the gate raising switch that is used during it.
So yeah, while this is something that theoretically could have been avoided with more time/money/polish every time they wanted to reuse a character even though Ramza gets to fight them, I think pragmatically they made the best choice they could given the writing.
. . .And the most frustrating part of this entire section is, of course, Ramza leaving Alma alone with plot coupons. Which is entirely a scene-writing problem, not a intergrating-battles-with-the-plot problem since Alma isn't in any battles.
If Ramza had just convinced her to stay in the capital and tell Ramza what she knew, all this would make much more sense at the expense of Alma characterization. The stone they were looking for still could have been handed to the bad guys, and they could have entirely plausibly kidnapped Alma off-screen using Templar Authority and also swords.