Double daughter
We have never actually heard of this happening before, but apparently, an elder daughter who has an elder daughter of her own is quite the match. These two forces clash on almost everything and it makes for some ugly scenes. What do you do when you have these two under the same roof?
They both want to dominate and they both want to run the show in the house, but one has to respect that she is simply not the oldest person in the room. So more or less, the daughter here should back down and let her elder call the shots. When she has her own home one day she will get a turn.