The river drowned hundreds of women but this woman (Suhni) drowned (conquered) the river itself. Its current lost its impetus and force by striking against the river's bank.
Note: Satan was absolutely inoperative against the Prophet, who, on that account, passed sinless life. -
بادہ از ما مست شدنی ما ازاو
عالم از ماہست شدنی ما از او
(Roomi)
The wine got the intoxication from us and not we from it. The universe became alive due to us and not we due to it.

Hundered of women were drowned by the river,
This one drowned the river,
Losing its force, the river strikes its head against the banks.