When people try to make fun of her brother Raymond, Squeaky stands up for him.
Squeaky introduces her brother by saying that she has to take care of him and she sometimes refers to him as her little brother because he seems to be touched in the head. She does not allow anyone to make fun of him though.
But now, if anybody has anything to say to Raymond… they have to come by me. …. I much rather just knock you down and take my chances even if I am a little girl with skinny arms and a squeaky voice….
Squeaky is very protective of her brother. She does not seem ashamed or embarrassed of him. In fact, she appears to want him to be who he is. All she cares about is that no one messes with him. She stands up for him because she knows kids will tease him, and she would rather get into a fight to defend him than listen to people call him names.
The self-confidence that Squeaky exhibits helps the reader understand her situation. We know that taking care of Raymond is a big job, but we also know that she is very good at it for someone her age.