As far as the adults Scrooge and Bradford go, I like to think personally that was her own opening to do the same. Because she was preyed so young she fell in love with Donald, always being so touchy with him, making him uncomfy actually before doing it to every other male duck she met. (She totally got it on with every male duck, and that's why she doesn't even know who the actual father of the ducks are, she's lost track tbh)

She preys on Donald when he's asleep, he's more complacent during those hours lol