At times the girls get along beautifully, at times, they fight like they are the worst enemies. I guess this is the same in most housewhole.

We notice that Zara sometimes can be a big bully. When she wants something Zaria is holding, she'll snatch from her, without asking. She doesn't do that to her friends, this 'rudeness' is only reserved for her sister.
Zaria on the other hand, blames Zara for everything!
When she fell once in the living room, immediately she said,
"Jiejie make me fall."I went o.O" because I saw the whole thing. I asked her how could have Zara caused her to fall as Zara was siting on the sofa far from her.
She replied,
"Just because jiejie moved the sofa, so I don't know where to step." (Zara repositioned the sofa earlier on, but the sofa was far from where Zaria tripped and fell on her own). o.O
Another time, Zara accidentally stepped on Zaria's feet. Immediately, the accusation began,
"Jiejie stepped on me." Then she checked her toes.
"Jiejie stepped on me now my toes cannot straighten already." o.O"
(actually, she's born with a toe slightly crooked, but she now blamed Zara for that)
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When one of the girls are naughty, and we want to punish them, the other would quickly search for the cane, bring it right to us.
When Zaria is the naughty one, Zara happily fetch the cane for us to punish Zaria. However, she won't allow us to carry out certain punishment on Zaria.
Once Zaria was really naughty, i.e. she smacked Daddy when Daddy scolded her, when Daddy smacked her, she kicked Daddy repeatedly, and then she wailed loudly non-stop.
I wanted to put her outside the house (within the compound), and Zara blocked my way, claiming,
"Even when Zaria is naughty, you cannot put her outside of the house. What if bad people catch her?"I pushed past her and got Zaria to stand outside.
Zara was standing at the door, watching and guarding over Zaria, and kept turning to glare at us. She got so upset and angry, she didn't want to talk to us for a while after that.
When Zara is the naughty one, Zaria would somehow behaved really well, and then tell us something like jiejie is so naughty, but she's so good girl. o.O"
When we punished Zara, and Zara started crying, Zaria will be fetching tissues to wipe Zara's tears, and then will be hugging Zara.
This is the way they show their sisterly love.