2 years + owing money to the feds + not being able to get a job: this person will suffer the consequences for her action for the rest of her life. Whether it's fair or not (I'll get to that point later), it's a huge deterrence for commiting crimes, particularly for white collar crimes like this.
Regarding the fairness of the punishment: I have zero feelings about this. The punishments should be chosen to make society work: deter future crimes, keep people that are harmful and hopefully help them change course. In this case, there's also providing incentives to cooperate.
I don't need people to suffer for stuff. If it's needed somehow for society to work, them great, but I don't feel (as many in this thread seem to feel) that long periods of suffering is needed for some reason (to appease their sense of justice? God? The victims? All of the above?). And let's be clear: the suffering in higher levels of security prison in the USA is on a whole different scale.