SOLVED. It's about a siren (Mermaid) who is caught by a sailor or fisherman [s]

[Kyuzo]

It's about a siren (Mermaid) who is caught by a sailor or fisherman, He forces himself on her and then she kills him and turns into human and in the book she has a journal that you read. Also she has a child that she gives up. Sorry that is about all I know right now looking for a friend, I will update with more info if I can.

[Lobstergirl, au gratin]

When did your friend read it?

[Kris]

Kyuzo, are there different time periods in the story (e.g., Monstrous Beauty by Elizabeth Fama)?

[Kyuzo]

Kris thank you so much. Monstrous Beauty was the book she was thinking about.

[Kyuzo]

Thank you as well Lobstergirl

[Lobstergirl, au gratin]

Not sure if this is Adult or YA, but one of the genres is was placed in was YA so that's how I shelved it.