They do balance out, Aloisa is no longer considered to have disadvantage. That may change if Medb fails her Wisdom save and also her concentration roll to retain concentration on faerie fire. But for this turn at least, Aloisa is good to make her Insight check.<br/><br/>The Deception DC to beat is going to be a lofty 15. Unfortunately, the Red Woman is a pretty duplicitous opponent.