Greg Stumbo, speaker of the Kentucky House of Representatives, said "Amanda's bill" would give victims "a fighting chance.
"Amanda Ross was what you'd want your daughter to be," he said.
Diana Ross said if the law is passed, other potential victims "would know that the perpetrator was in their space, and they would have time to call the police or have their own protection available."
She doesn't believe the law would violate a suspect's presumption of innocence.
"If you're innocent, if you were wearing a GPS device it would prove that you were where you said you were," she said.
Diana Ross said she hoped other women in similar situations "would be brave like Amanda and report it to the police and use the system ... and if they have this GPS device you would know that your perpetrator was in your space and you would have time to get protection."
She wants her daughter to be remembered "for her laugh, and her beautiful grin, and her wonderful witty humor."
The Associated Press contributed to this story.