I'd stop at the Caverns or caves in Cave Junction, Oregon (just over the border from Crescent City.
There is also a small WIld Animal Park in the same area and they have some tigers etc.
Also, there is Trees of Mystery just north of Orick and they have a gondola ride and a really nice walk that you can take a stroller on. Worth doing.
Ocean World in Crescent City is something she would love. There is a touch tank there and a little show they do with the seals she would love. Look for coupons online to all this stuff.
I'd go over to the Red Lion and look at the pamphlets they have in the lobby and you will get the exact names of the places as well as contact info and prices and sometimes coupons.