Call me crazy but I think the eye rolling should probably be from her to you, kind of entitled to expect someone to buy rugs so you don’t have to be bothered by their living sounds 30 minutes before they go to work and 30 minutes after they get home. It could be so much worse.
That's typically for upper floors. If she's on the bottom level that may not be required.
The fact that this person can hear somebody's floor below them that's a problem with the building not with the tenant. Or the original poster just wants to somehow live in an apartment that's perfectly silent all the time which doesn't exist
Trust me, I don't. We have loud mowers and I can hear tvs and guitars and all of that. That's all fine. But if I wanted to hear footfalls I would have just saved myself hundreds of dollars to move into the downstairs apartment she now occupies when it became vacant...