QB desktop all act the same, so what version she gets is really dependent on her needs, pro is the cheaest and the entry level. All desktop installs have inventory, classes, billable expenses, etc
Buy the current verison of QB she needs and install it.
With a QB data file that old the best thing would be to buy QB from intuit, then contact their data services and have them update the data file to current format.
Other wise you would make a back up, find someone with 2012/13 installed, restore from back up, make a back up, then do it again in someones 2016/17 install, and finally restore the back up in the new 2020 install. QB generally has no problem restoring a file from a back made 3-4 versions ago, beyond that it gets dicey
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