As far as I know, if this cat has any snowshoe in her and doesn't just have white mitts, then she'll be a lot like a siamese as that is how people started breeding snowshoes, so they are probably very similar, and from what I know of siamese cats they are very people oriented and "dog like" as in they like to follow you around and are very chatty.
Now I could be wrong, but we had a friend who had a siamese and he followed us everywhere, not sure on the lap cat part. Possibly? I believe in general siamese's are lap cats, which would mean the snowshoe probably is similar, but I'm only going off quick internet searches about the two.
Honestly the only way you'll know is when you go to meet the kitty and get to know her.