On our company PCs we have both Edge and Chrome, after the latest Windows update a few days ago, every time I try to set Chrome as default browser, a window pops up saying something on the lines of "are you sure? please try out the fabulous Edge first, you might change your mind".
That annoys me to no end, first we are in EU, where Microsoft has been fined in the past for not allowing a browser choice, second, we're talking about Windows ENTERPRISE !!, keep that shit out of it, policies on PCs are decided at enterprise level, you can't spam users about it.
On which computer? Her own?
Does not the company provide a PC with the tools needed? If yes, she has no right to decide what goes on it, the company does and she should respect that, doing what you want on a company PC can get you in serious trouble, way more serious than finding out you're using a pirated version of Office.
If the company expects her to use her own PC, they should at least provide the needed software licenses, Office365 can be used on the web, no need to install anything and it can be used on Linux no problem.
BUT the serious problem remains of having company data on her own PC, the best thing to do in such a case would be creating a VM, encrypting the file system and keeping all company data contained inside the VM.
Tho in such a case I would change company, no serious company today would expect employees to keep company data freely on whatever personal PC, that could lead to data breaches, I would never want to be involved in case like that, tho I live in EU, we have very strict laws about data integrity and privacy, dunno about other countries.