Bass, how low can you go?

Better go tell them to turn it down, or go to a quite space!

She's studying to be an engineer, so your first suggestion is out of the question. We just don't confront humans (but when it comes to facing down technical challenges, we're badasses!)

Your second idea is most feasible.

All you have to do is set up your own subwoofer and set it to play 180° out of phase and the destructive interference will give you golden silence. That's an engineering solution!

When I was studying it was my partially deaf dads surround sound that killed me. I ended up going to the park in the middle of the night like a weirdo. But I lived in a small town so there were no official hours of operation. May be different for other places.

If only there was a super quiet place with a ton of books...

Probably closed due to Covid

Darn, that sucks.
When I was in school, my Landlord's son would have massive parties every day in the summer. (and every weekend and a lot of weekdays when it wasn't the summer) The house would shake. I'd feel it hit me when I walked in the door and even my lungs felt like they were vibrating. I got used to the vibrations and would stick my ear buds in my ears and play my own music to drown out their music. It worked because I had music I heard so much I could ignore it. I also used music to go to sleep when they carried on into the morning with the music, and when I was on public transportation and needed to study. Hopefully you're able to find a playlist you can ignore and use to study. Good Luck!!!

Was it thermo? That sounds like a thermodynamics exam if I've ever hear of one. Good luck!

It could be, but any engineering subject can be taught badly enough and there are so many curveball questions the professors can ask that any course can be converted into a "weed-out."