day late to the party, but I had to fiddle with the noise removal part for all of 20m to *completely* clean up a Gary Clark Jr. show from a blues tent in Memphis..there was a 'hum' in the background, and it's now gone.
the key for me was to isolate just a fraction of a second for the 'noise profile' (more time - more noises for it to add to its filter), and make sure there was no crowd noise...surely there's a quiet part between speaking?
and if you even want to 'loophole' it, where you boost the voice before you apply the noise 'removal' (think 'reduction', as removal would be silence):
1. load OG file
2. get the 'noise profile'
3. open the same file in another tab.
4. boost it, warts and all.
5. delete the file in the 1st audacity window with the noise profile you created, but DON'T close the tab it's in (go to 'file', then 'close' on the left vs. the red X)
6. go back to 2nd opened file, copy
7. paste it into the OG audacity window, which still has the noise profile you created
8. go back to effects, and at the very top it should say something about 'noise profile' (vs. in alphabetical order), click that
9. wait
10. enjoy your results
that way, you're applying the noise removal POST boost, without having to get the profile from the boosted track. more of YOUR noise gets thru, less of the hiss.
will try it on your sample, and PM you if it works (I can hear what she's saying, it's not easy, but I'll transcribe what I heard)