Considering Regine's Villainous Breakdown back when she tried to kill Félicie, there's a high probability she didn't think about how to Make It Look Like an Accident and, had she indeed killed Félicie, all Camille would get from this is the stigma of being a murderer's daughter.
What's going to happen to Camille now that her mother is likely going to be jailed for attempting to murder Félicie?
One possibility is that, as it is implied that Félicie will likely remain living with Odette in an adoptive capacity, Odette may be kind enough to similarly take in Camille as well?
Consider how things for Camille could have turned out if Félicie never got her spirit back and returned to Paris, with her dancing more mechanic than anything, and her mother unforgiving and vicious, and likely not going to react well to reception about her daughter's performance on opening night. Regine could have taken her frustrations out on her daughter, on Merante, or just on anyone unlucky to be nearby.
