Seen your other thread
Just bear in mind that she is most likely a hybrid. Virtually all Winter Whites and Campbells russian dwarfs in pet stores are a hybrid of the two species. They may look like a winter white or a campbells, but she will almost certainly be a hybrid. Only specific breeders usually have pure pedigree winter whites and I think they are few and far between. And even some breeders say they are pedigree but don't realise they aren't! The two species have been so interbred for so many years it's the way it is.
She is still adorable! The only real difference to be aware of is that hybrid hamsters can be prone to diabetes so diet is important. A sugar free hamster mix and no fresh fruit or other sugary things - like certain chew sticks. Fresh veg is fine.
There are some US hamster owners on here who know about the best hamster mixes for hybrids in the US
Which mix is she on at the moment?
She is really lovely though and seems quite tame. She is lucky to have an attentive owner!