Consider talking them into a pair of rats instead? Rats are a lot friendlier, actually bond with their people, and adapt their naturally nocturnal schedule to when their people are around instead. Hamsters are often bitey, generally prefer to be left alone, will stay nocturnal because they don't really care about you, generally should be housed singly, and are a lot less trainable and tameable than rats.
I did. At least, we looked at all of the rodents they had at a big box retailer and we discussed each. Actually, I mainly listened as this was all new to me.
Rats, specifically, are out, per my daughter. She is in no way interested in them.