This is a good question. Perhaps you could have rephrased the question by saying: "Does Miss Maudie change throughout the novel?" I like this approach better, because it can be argued that Miss Maudie does not change. She is constant, which shows her strength. Put it this way, if you are right or basically right, why change?
Miss Maudie is Atticus's neighbor, and right from the beginning she is kind, thoughtful, and a proponent of what is good. These qualities do not change. In fact, her consistency is so unwavering that she treats all people with respect. This includes children and blacks. This is what really sets her apart.
At one point if the novel (chapter 5) she says something about Atticus, which can be applied to her as well. She says:
"Atticus is same in his house as he is on the public streets"
At the end of the novel she says:
"The handful of people in this town who say that fair play is not marked White Only; the handful of people who say a fair trial is for everybody, not just us; the handful of people with enough humility to think, when they look at a Negro, there but for the Lord's kindness am I."
If we pay close attention to what Miss Maudie is saying, then she is really advocating for equality. Therefore, I would argue that Miss Maudie, like Atticus, does not change. They are good from the beginning to the end.
This is in my opinion, and it may be terribly wrong from others' analysis.
Ms. Maudie seems to be very quiet and a less dramatic character as compared to others before Tom Robinson's trial. She does not seem to voice her opinion out as much. However, after the trial, I think she made a little speech to voice out her own opinion on racism. The trial could have changed her and inspired her to voice her thoughts more.
Sorry if this didn't help at all!