Welcome to HCM
The wt of child depends on genetics nutrition n environment
At 1 yr ur child should weigh triple her birth wt say around 10 kg n then by 2 yr she could ve been 12 kg atleast but it is different for different children so the best way to know is to plot the Childs wt on WHO growth charts available with any pediatrician
n to track wt every 6 mths to know if they r growing well.
But ur daughter seems to be healthy.n u r feeding her well.so don't worry.just add to her diet nuts n bananas.all the best