Sylvia Massy enhances the drums' prominence by adding a parallel compression path.
Like with her kick/snare parallel compressor, she is using the Avid BF-76 as an 1176 emulation, set to longest attack, shortest release, and a 4:1 ratio.
The compressor gets fed by all drum tracks, including overheads and rooms, not just kick and snare. This increases the drums' sustain, loudness, and excitement, effectively accentuating the ambient sound of the kit and bringing out "the room within the kit".
Massey mentions that she typically automates the parallel paths throughout the song, often increasing their level towards the end to amplify the song's dynamic build-up and ensure the kick and snare remain prominent.