I agree, the stoppage on McMann was fine. She wouldn't have been able to recover fast enough, as Rhonda would be all over her so quick.
The other fight however... Herb really drop the ball on that. Pyle was wrecking him and it felt like a simpsons moment where ralph screams "Stop, Stop! he's dead!" If Rhonda didn't come in with that strategy, McMann would have wrecked her. Her boxing in the early stages was impeccable and her weight shifting, to prevent those judo throws.