This show has absolutely nothing to do with the books, other than the main character's name, and yes, she did have strawberry blonde hair in the books so the red hair is ok.
Everything else is totally different. Honestly, this is a trend I hate -- taking something "known," if only in general public knowledge, and using it to create a TOTALLY different show, book, etc. If you want to tell this story, tell it. Just don't hang it on a beloved or culturally significant other book, show, etc. (Still angry that Frozen used any references or allusions to H.C. Andersen's The Snow Queen in its ea