Soothe Spirit Burn Out Trigger Vengeance

[SteampunkCake]

If Lost Love uses Soothe Spirit on another model with Vengeance and declares the Burn Out trigger, does Lost love take the Vengeance damage?
Vengeance +X:
After Resolving an action that targeted and damaged this model, the Attacking model suffers +X damage. 

The term "Attacking Model" isn't defined anywhere in the rulebook. The rules do not differentiate an attack action or a tactical action other than if it has a resist or not, the same wording is used for duels and actions regardless of attack or tactical.

[Adran]

There are a few differences between an attack action and a tactical action. In addition to attack actions having a resist, you also can't perform an attack action on yourself. 

Likewise you wouldn't get to take advantage of the adversary condition if you were doing a sooth soul action because that states attack actions.

 

Its not an attack action, so Lost love is not attacking and therefore is not an attacking model . I would say therefore they wouldn't suffer vengeance.