"She is the girl who is with the long hair"

"She is the girl who is with the long hair."

This appeared in a primary school textbook but I question if this phrasing is indeed grammatically correct. As a native English speaker, it simply "feels off" to me and I cannot find even one example of this structure being used online or otherwise.

I'm no grammarian, so I can't quite express why it feels off other than several items come off as unnecessary or superfluous.

Thanks in advance.

Solution 1:

It reads strangely because hair is a part of a person (inanimate) and the sentence treats it as though it were a person or an external object. "He's the guy with the eagle tats." "She's the girl with the black fingernails." Notice how you don't need "who is" in there? You have or do not have long hair; it is not who is with as though she was with child.