Can you provide the link to the Instrument Plugins video you mentioned? Thanks in advance.
Certainly - here you go:
I knew that BiaB included a 5-band EQ plugin, but I have found that it's really useful to have a visual UI when EQ'ing. You can be much more surgical in what you boost or attenuate. Being able to grab the band node marker and drag it up and down, and left and right while the audio it playing really helps target the problem and the solution in real time. If you're not familiar with EQ'ing, the visual feedback is also a good learning opportunity.
I recommended a free EQ, so as not to add any cost if it didn't work for her. Along with MeldaProduction, TDR makes some of the best free audio plugins around. The Nova EQ is excellent, IMO.
BIAB also includes a 10-band EQ, just so you're aware. I also prefer parametric EQ's over graphic EQ's (and Nova is a fantastic one that I use all the time), but in this case I wanted to recommend things that are built into or included with BIAB.