She is absolutely gorgeous! You've done well to handle her
Robos are notoriously fast and not easy to handle and tame. Looks like you two have bonded. Robos like to dig tunnels and like quite a bit of cover I believe - so plenty of space in a cage but not too much "open" space above them - lots of tunnels and a platform or two should give shelter. Having said that they all have their own personalities and some will be braver than others. If you can give her as much depth of substrate as possible she may dig some tunnels
A specific dwarf hamster mix is good as well - if you can get one.