I also trained with a girl who had absolutely fantastic aikido. Her grip as uke was strong -- though I was physically stronger than her, I could not muscle my way through the technique. At all, full stop.
FWIW, fairly recently a woman in her 70's who had trained with Tohei back in the 1960's grabbed my wrist to show me something. I'm over 200 pounds and strong. Yeah, I could have powered through her but she was able to mess with me a heck of a lot more than people my own age and size. Heck of a lot of power there.