A breeder may sell to you as a surprise if you explain the situation. It's your mom, after all, so you can give the breeder all the information on her, her house, her cats, etc. I don't think this will be a big issue, to keep it a surprise.
However, I know nothing about cat breeding. I know a lot about the dog world, but zilch about cats.
When looking for a breeder in the dog area, the main suggestion is to find some show or working competitions, go to them, and meet the breeders via this route.
They have cat shows too, I think. So, I think, the thing would be to look for the show competitions, and find the breeders via that way.
Do they have breed specific rescues for cats? That's another option - they have kittens around this time of year.
However, I know nothing about cat breeding. I know a lot about the dog world, but zilch about cats.
When looking for a breeder in the dog area, the main suggestion is to find some show or working competitions, go to them, and meet the breeders via this route.
They have cat shows too, I think. So, I think, the thing would be to look for the show competitions, and find the breeders via that way.
Do they have breed specific rescues for cats? That's another option - they have kittens around this time of year.