it don't matter that it is a question, you are still spoiling something major in that said question. Besides it is obvious your question is rhetorical which means the said main event actually did happen. For instance i wanted to read the manhwa but now that I saw your comment about her return I dont wanna freaking read anymore, talk about spoiling stuff
No, it’s implied she met them again at the end where she heard music and it’s the same song as the one jiheon wrote with her name too then she walks and says something "I hope you’ll meet your extras one day” with her reuniting with them
As the author explained in the extra chapters , everyone got out of the story and became real ppl but only her friends (not their families)remember what happened and she also said that "they’re together and doing well"

Soooo. She just went back to the real world and out of everyone's life? Really?