It is not a real prison. She will probably go to Bryan Minimum Security [1][2]. No fences. Dormitories. Visitations. Gym, etc. The fine is large, but symbolic. From the article, chance of full recovery is very low. No mention, if this would be converted to house arrest at some point. [1] https://en.wikipedia.org/wiki/Federal_Prison_Camp,_Bryan [2] https://en.wikipedia.org/wiki/Elizabeth_Holmes
So while I agree that in the US white colar criminals tend to suspiciously often get the lighter punishment and that this fact is a glaring injustice, I think the US prison system as a whole is so utterly misconstructed, that this cricicism is a drop in a vast ocean of injustices.