Despite being superior in combat to Lela, Kaguya doesn't want to kill Lela. Lela's her friend. So she allows Lela to wound her, so that she can tell her that. It worked, and now Lela realized just how wrong it is for her to attack a friend because of orders from the Vatican.
I'm surprised Kaguya recovered so quickly with that talisman. That was enough blood loss to knock out a lesser person!
Now Linford, the legendary asshole, has really shown his true intentions. He's here to kill! Can an exhausted Lela and wounded Abeno really fight him off?