IDK the Name

[Jaya]

There is this book I read when I was younger. I think it was a YA romance. It is about a poor girl named Mia and her single mom who moved recently to a highschool and Mia eventually gets together with a rich boy (his name might be sam?). The father (his name might be richard) hates her because her and her mom are poor and tries to kill her and her baby. The book ends off in the hospital with Mia getting engaged to Sam and keeping the baby. What book is this??
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