how does titania resopnd when oberon asks for the fairy child this time

This is addresses in Act 4 scene1. Oberon says that he saw Titania earlier in the woods. There he humiliated her about dating an "ass-head". Oberon asks for the Indian child again, promising to undo the spell if she consents to giving the child over to him (presumably to join his entourage). Titania consents.