She lost herself in the story.
Meaning: This means that she was completely absorbed in the story and didn't notice anything else.
Choice of Words: Lost means to be unable to find something or someone. Story is a narrative or account of events, experiences, or imaginary characters. When you put them together, "Lost herself in the story" means that she became so engrossed in the story that she forgot about everything else around her.
Alternative Expressions
Related Expressions