Three things I would say.
First I would not of used a location call. Reason is you told them that this area is another dogs area and they might of taken that as the "Boss Dog"

Second they might of been sneaking around trying to see who (you) were and you didn't see them but they seen you. Night hunting sometimes is to hard because you can see them way off but they see you.
Third .............................. they knew you were at the house. Fawns don't feed or stay around homes and they differently don't cry out from a second story balcony. You need to hunt them on the ground away from the house.
JC