I work in a shared office space in a university. This woman sits behind me and types very aggressively on a very loud mechanical keyboard. She brought this in recently to replace the silent office keyboard issued by the university. It has been seriously distracting and I can hear her slamming keys over the music in my headphones. She also uses a gaming laptop with very loud fans in place of the office-issued computer, I already put up with this and really do not want to also put up with the mechanical keyboard. 

How do I get her to use the university-issued silent keyboard instead of the mechanical one she brought? 

I mean, we’re issued silent keyboards for a reason, right? 

We’re under different managers and I don’t know her at all. 

Can I just tell her politely to not use the mechanical?