An idiom is a special speech, a personal dialect of one end or social group, a dialect, jargon. A personal idiom means individual traits that show personalities that are easily recognized in behavior or interaction with others. In this example, the specific speech is noticed in using the adverb "really" that includes characteristics of the speech.
She realized that neither of the two family’s were right nor wrong, she also needed to stop being biased towards her family. This made her determi to be a little more understanding..
I am a Anne frank expert! If you have any more quest about her or anything about her just ask me!