I wanted a Jake-Nessie book so badly but I don’t think Stephanie Meyer would write a story about them. Maybe it will be overrated if another sequel will be release. But still I want it! And after a few clicks here and there, I accidentally bumped in this site and read a fanmade story of Renesmee. I think it was cute, nice and I enjoyed it. Edward, as expected, is overprotected Daddy. Well, Jake is Jake.You might wanna read it. [here] and [here] 

Kuddos to the writer!