With this, it seems as though Lemillion is safe. Personally, I don't know how I feel about that. I loved the intensity the manga gave, and how it resonated with everyone, in story and across the fandom, that he legit lost his powers. But this girl... I mean, I get how some quirks are bound to be hax, so I'm fine with it to a degree.
If they save her, I would seriously prefer that the writer makes her use her power on Lemillion and All Might. If she's safe for longer than a week and doesn't do that, then it just becomes a serious in story stupidity that I wouldn't like. If she stays alive and she returns the two back to their previous states, I'm okay with that. Though, I believe the story would progress best if she doesn't make it.