This is sad indeed. Sometimes for various reason sisters or brothers can make suffer one another especially when the parents do nothing about it, but what is positive is later on when they grew older and has their own family they will realize and regret not being kind to their one another. Talk about things and situation is very important. Never keep sufferance inside, write that sister and tell her how she'd affect your life this can change things.
I like this poem, very well done,5/5, kel.