Thanks for the suggestions. A couple of thoughts:
She is very protective of her horns. Has been since she first started playing. One time, when she was a freshman, I got a call about a last minute gig. My horn wasn't in the car, but her's was. Back then she was playing the 70's 3BF I played in HS. So I asked her if I could borrow her horn. I had a #ProudDad moment when I pulled her horn out at the gig. Her slide was still in fantastic shape. But I suspected as much - she's pickier than I am about slides.
The problem with the big SKB case is that it's really made for larger horns. The 3BF will slide around in the case unless she keeps it wrapped with a towel.
She prefers latches over zippers on cases, which is one reason we started looking for alternatives. The anniversary case has a cloth zipper cover.
I almost scored an old-style Eastman tenor case - she likes my older Eastman bass case.
Thank you for these suggestions. I'll discuss the protec options with her. Or maybe I'll just have to save my nickels and dimes for one of the new-style King cases.
--Andy in OKC