She won't have as much energy for anger now but then she can just sit on the enemy. Besides, her clothing will never stay pristine for long anyway. Her card's info says:
JIOJ-EN009:
My Plump Pony Pal Saddle Rager
LIGHT / Plump Pony Pal-Type Synchro / Level 4 / ATK 0 / DEF 2100
1 Tuner + 1 or more non-Tuner "My Plump Pony Pal" monsters
When a "My Plump Pony Pal" Synchro Monster you control battles: Inflict 1000 damage to your opponent, then if the opponent's monster destroys the "My Plump Pony Pal" monster (by battle or by card effect) and sends it to the Graveyard: You can target that opponent's monster; banish that target.
Ultra Rare