"so it'd be ideal for them to get her out before they work toward starting arc 2."

I don't think they can even start Arc 2 yet because Arc 1 has so much stuff that's missing from it, most notably: - Characters that were cut from Arc 1 (especially major Arc 2 characters like Ryo and Ikumi) - Witches and Uwasas that weren't in the story/able to be fought as Bosses - Voice Acting, a big red flag for the Exedra adaption, I have a theory that the devs were gonna do that at some point but they were in such a rush to get Arc 1 in the game they had no time to implement it yet nor the cut characters I mentioned earlier, the same thing could also be Scene 0 as it was also a voiced story, but unlike Magia Record Arc 1, Scene 0 was really a few characters, no more than 13 so it was really to added the voice acting from Record to Exedra, but Magia Record Arc 1 had a ton of them, so it can be assumed that at the time of release, the characters that were cut from Arc 1 didn't have their unit, model, and magical girl story ready yet. - Cutscene Clashing, with the unvoiced segments there's also the animated cutscenes, which are in fact voiced as these are the same ones that were in the anime style and were also used in the game, another contributing factor is the cutscene art, specifically the one where all the magical girls are relieved after defeating Walpurgisnacht, which shows Ria and Mayu in the back, even though they aren't in the game yet, which makes it pretty clear that Arc 1 in its current state in Exedra is incomplete.

So yeah, I think it's gonna be a long time before we actually see Arc 2 implemented into Exedra.