I'm not expert on Russian Tortoises, but I don't think dwarf tortoises exist. Russians tortoises are escape artistes. This is the forum I learned update care information. Stay off of Fb and YT for care information. Most of those places have been regurgitating the same out dated information and it does more harm then good.
https://tortoiseforum.org/ Now they can sometimes come across harsh and the overload of information can be overwhelming on there but if whoever takes care of it puts the time in they will have a very happy tortoise experience.
Where did your wife get it from and how big is it? Most Russian tortoises in the pet stores are wild caught and at least 5 yrs old. Care for a baby is quite different then an adult.
Good thig about a Russian tortoise is they are hardy and can live indoors in any state unlike some others.