Ohmigosh!
Woah there! This is the perfect soap opera setup!
Scenario A: Takato-san gonna jump in (maybe even take the hit) and then he's gonna be like: "WTF girl! We may be forced to live together but..." and then he drops truth bomb after truth bomb after truth bomb at Adel-san, crushing her into dust!
OR
Scenario B: Alice takes the hit. Takano-san stays useless. And Adel gonna be shocked and speaks her true mind and the sisters finally talk it out with each other how it should be.
Merely predicting here. I have not read the raws.