Lose tournament: Attend all of her events. Be nice and understanding whenever possible. But make sure to pick Water element when given the choice.
Win tournament: Same as above, but pick any element except Water.
Lose Tournament: Make sure to avoid at least one of her events, it’s easiest to do this with her first event but it doesn’t matter too much which one. Pick the less sensitive options and be kind of oblivious to her behaviours. Again, pick Water.
Win Tournament: Not sure if this matters, but after becoming partners in the tournament it might help to pick the more competitive answers. Also, don’t pick Water. You know, again.
Lose Tournament: Pick Fire when deciding your element. Go to all events. Take her side at points, but also challenge and throw her off-guard when the chance shows up to get in her favour.
Win Tournament: Same as above, but don’t pick Fire.
Lose tournament: Avoid one of her events to lower her affection towards you. Act as Brin’s helper/underling and don’t challenge her. Pick Fire element.
Win Tournament: Same as above, and then pick any other element but Fire.