You will find the idiom “To me it makes no difference. To me.” in Julia Alvarez’s book Once Upon a Quinceanera: Coming of Age in the USA. An idiom is a type of figurative language in which the meaning of the phrase does not match the literal meaning of the words.
In this instance, three women are working in a dress shop altering fancy dresses, the type worn by young women for their quinceanera when the idiom is used in the conversation. The conversation ensues while they are interviewed for a book about the celebration. Although they work to make the parties meaningful for others, not one of them experienced her own quinceanera. They were too poor, and when asked one of the older woman responds, “To me it makes no difference. To me.” She is saying she did not care about not having a quinceanera. Her reason: she would rather spend the money on something necessary. To her the quinceanera, although a cultural tradition, is a waste of precious money.