She doesn't look like a roborovski to me - sorry. I am not an expert on Russian dwards but she doesn't particularly look like a Russian Dwarf hamster either to me! She probably is and hard to tell if she's tiny, but her ears look quite small for a hamster. You did say she was tiny though - maybe still very young. Hmm Just watched the rest of the video - she's adorable anyway
Probably a young russian dwarf hamster (of maybe even a runt of a litter?)