Technically 20 years per count, but realistically not too many. White collar crimes are anyways not punished very strictly, and she's a new mother on top of that. She'll negotiate a short term at some country club prison.

I'm not an expert in US sentencing guidelines, but a quick crack at the sentencing guidelines calculator [1] suggests ~97-121 months, or about 8-10 years.

[If you're not familiar with sentencing, the basic procedure is this:

1. Compute an 'offense level' for each count. For counts that are strongly related (which all of these likely are), combine by taking the maximum offense level. If they're not related, it's more complicated (not simply adding them up).

2. Compute a 'criminal history level'. For Holmes, that's basically "no criminal history."

3. Adjust for things like the convicted person's remorse or cooperation with investigators.

4. Look up a table that maps offense and criminal history to an actual sentencing range.

5. Adjust that (primarily, but not exclusively, in the previously output range) based on the judge's feelings.]

[1] https://www.sentencing.us/

20 years per count