What ? Don't tell me the other maid is also an assasin ?That's will be stupid. I'm not never really against yuri end but here that's clear that Chun don't want to stay near Alice nor she love her. You really had to make ahuge shift to make it work properly and not having Alice blackmailing again Chun to forced her doing thing she don't want. Plus, why do you want to take someone clearly not suitable for the job as a bodyguard ? I know Alice want Chun to stay near her but she could have just forced her to stay as her doll, not doing such a dangerous job.