Irizati al-Shirin's page

^ You guys are missing the point.

"Heroes able to communicate with the boar might be able to change her attitude from hostile, but Nature checks aren’t sufficient to persuade the boar to halt her attacks."

This is a more thematic way of saying "if you have Wild Empathy you can make Diplomacy checks to Make an Impression on the boar, but merely being trained in Nature isn't sufficient."

This is the entry for Wild Empathy:

"You have a connection to the creatures of the natural world that allows you to communicate with them on a rudimentary level. You can use Diplomacy to Make an Impression on animals and to make very simple Requests of them. In most cases, wild animals will give you time to make your case."

So yes I agree that using a class ability should give a PC a good chance to resolve an encounter peacefully. In this case that would mean setting a low DC for the Diplomacy check to calm down the boar.

If a Druid PC isn't trained in Diplomacy they need to rectify that ASAP.