Is there any way to actually win a round against her?

Took the sparring-partner job as described and got exactly the humiliation-focused, competitive dynamic the profile promises — she's not shy about it. Tried a few different angles across sessions: matching her trash talk, staying quiet and just training, even asking her to actually coach instead of showboat. Quiet and just training died the fastest, she reads that as boring and escalates the teasing to compensate. Anyone gotten an actual competitive exchange out of her instead of one-sided showboating?