Yeah that's the crux of the argument the lawyer is making:

Timko, a former prosecutor, said Ohio’s abuse-of-corpse statute is vague. It prohibits treating “a human corpse” in a way that would “outrage” reasonable family or community sensibilities. “From a legal perspective, there’s no definition of ‘corpse,’” she said. “Can you be a corpse if you never took a breath?”

Howard said clarity on what about Watts’ behavior constituted a crime is essential. “For rights of people with the capacity for pregnancy, this is huge,” she said. “Her miscarriage was entirely ordinary. So I just want to know what (the prosecutor) thinks she should have done. If we are going to require people to collect and bring used menstrual products to hospitals so that they can make sure it is indeed a miscarriage, it’s as ridiculous and invasive as it is cruel.”

She'd already been in and out of the hospital, and so when she got home I'm sure she was so traumatized and confused that she probably thought she just had to release whatever was left and move on. Kinda like what happens in a period. The blood comes out, you flush it and clean up, end of story.

I would imagine the "proper" protocol would be for the doctor to "perform" the procedure in a hospital and dispose of it the same way they do of all biological waste. There is absolutely no way she would have an intimate knowledge of Ohio's corpse desecration laws. I buried my cat in the back yard and that was that. She should be afforded the same dignity here, since the fetus died in utero.

The legal requirement seems to be not to have one.

Stuff like that if people who have not a single clue about pregnancy make laws regarding pregnancy.

This has nothing to do with the case above, but it's a really bad idea to just throw away a kidney stone. It needs to be analyzed so you can come up with a treatment plan with your doctor to help you avoid future problems.