I picked up Minerva as my bodyguard and immediately cleared the entire map of WQs three days in a row during Power Overwhelming buff on the Mage tower. This got her just high enough by the end of those three days to get her first slot, which I slapped a Pouch of Wonder (50g and AP from WQs) on and have not looked back since. I did not use a bodyguard until now, I had all my guys handling missions, including Koltira, and once Minerva hit purple level and got her second slot, I slapped on a Potion of Triton for another 50g from WQs. 100g/scaling AP (Currently 100k) from every WQ has added up VERY quickly. I'm hoping to get a good legendary from the next go round of that buff from the Command Center (Ideally Resources/AP) so I can double up on AP from WQs with her, making her the ultimate level of useful. 200k AP (Scaling), 50 resources and 100 gold from every world quest in addition to its normal rewards is... a lot.
Is there anyway to hide her combat ability so it isn't in the middle of my screen? I've looked through the options but can't find anything to remov minerva ability.
It's possible your bar is locked, use shift + left click and put it somewhere in one of your empty bar.
Minerva also gets you a wraith walk speed increase.