Bombking because of his large detonate area doesn't really need to hit meave in order to deal a lot of damage to her and Maeve only has 1800 health so with the right timing you can destroy Maeve

MOVE AS MUCH AS POSSIBLE. If Bomb King lands at least one bomb on you, your pretty much done for. His AOE makes it easy for him to land hits on you. Attack him from the air and flank around him to throw him off.