Okay, after every battle, Luca has been asking whether there was anyone to revive. I had never lost anyone, so I always answered no.
Now, following the last battle with the bandits (Jabbar?), Luca doesn't ask -- and this is the time I actually lost someone (Set).
Why would this happen? Is there anything I can do? Any way to ask Luca to do this?
She simply doesn't ask if you need anyone revived after that fight.
Because: You can walk up to her in Baz's Manor or in your new desert HQ, there will be a option to revive your teammates.