new to roborovskis hamsters

[Leo]

hello , recently a few days ago I brought home a small roborovskis hamster I believe . She is fully white other then a black dot on her forehead anyways id like extra tips to keep her happy since she is the first drawf hamster we have had in the house hold ever though we have owned other hamsters before and have two other hamsters as it is being my younger siblings pets anyways id enjoy some tips and pointers along with that I will be posting photos of her soon hopefully as well as her tank right now . I have her set in a twenty gallon tank which she seems happier in it then in hamster cage I previously had her in for a short time till I got her main cage which is the tank.