Sisters Macbook doesn't connect to router

My sister bought a Macbook, as per my recomendation.
She has the black Macbook in standart definitions, she has wireless in there somewhere, but I can’t seem to allow her to connect to the internet threw the router.

I got no WEP or WPA, but I do have a Mac address filter.
I added her Mac to my wifi allow list.

She still can’t connect.

She doesn’t need anything besides the router to connect does she?