I'm not seeing this as over protective. Yet. He's really just asking how he's wrapped up in family and yokai drama. Dad doesn't get to be pushy or judgy based on the answer though.
Wait. A healthy and open friendship with a member of the opposite sex being accepted and encouraged by a significant other in a manga? What timeline am I on?
So this is either her having to share him with every other witch in the world, or for some reason you only get the ability to recharge after fully depleting your battery. Like an old cell phone.