Perhaps you should consider a different AVR that allows multiple EQ settings to be saved and accessed.  Marantz comes to mind.  Perhaps the new Anthems reviewed in the January Sphile.

RG

What kind of EQ does she need/want?  Graphic EQs in AVRs are, mostly, tone controls.

Kal

parametric equalization.

I added a cheapo eq to my system and it worked well, so add a quality unit. older avr with 5.1 analog inputs. has a dedicated eq port, used that. afftects R-L-and lfe.

have seen the Bijou around, eq for up to 7.1 channels. but newer avr's have built in. also there is room treatment that's overlooked, and really makes a difference.