Wow, she is doing good (in the fight with Mariah). She can give as good as she gets.
Wow, she is doing good (in the fight with Mariah).
彼女、(マライヤとの喧嘩で)すごいね
→be doing goodは「よくやってる」というニュアンス。
She can give as good as she gets.
負けてないね。
→要はくらったものと同等のものを返せるというイメージのフレーズですね!