Sisters, Friends Forever

I was in fifth grade, age eleven
I've been waiting for months, seven
Ever since I found out I was excited
I was getting my first sibling, I was ever so enlighted
It happened so fast, they thought I would faint
But once you were here I needed a restraint
Now you are 3 and I love you so
I hate that every other weekend I have to go
We tell you I'm going to a friend's house
One who lives an hour away
Only half of us are alike
And our bond can be a hike
We act like eachothers consant blister
But forever you'll be my friend, my sister