Well, if we went the direct confrontation route, depending on the exact scenario, it would give you a measure of respect from Lashita. Knowing Lashita, seeing a destroyed city and later hearing who did it wouldn't ping on her radar. I honestly think the first idea would be the best. However if it was a draw in battle, Lashita would want to finish it (Just to confirm) to see who'd win. Not that it'd be a battle to the death or anything. I also think a draw would happen if A) she was needed else where or B) one of the sides was forced to retreat and they had to go or C) Lashita had a mission to finish and abandoned the fight in order to complete it.