One explanation later:
Katya (signing): Are you sure it’s a good idea to tell Leif?
Elisa (signing): Someone he loves is in trouble. He deserves to know!
I would’ve hated it if you kept me from finding out that my dad was trapped in the mine collapse.
Katya: You were this close to catatonic while your dad was trapped in the mine collapse.
Elisa: And you covered for me! So if Leif needs it, we can cover for him.
Katya: I’ll let it be your call.