Scared and nervous

Sarah • I have two beautiful children a boy and a girl. TTC baby #3
So my sister has a two year old daughter and whenever I see other girls that are really young I get freaked out and scared. They whine and scream and throw attitudes. And one girl in the daycare I worked at would literally scratch other kids faces for a toy she wants. (She's only 2) I want a girl so I can dress her really pretty and other stuff. But I don't want a girl because they are 'rude' and 'whinny' I am worried my daughter will be the same.