If the baby was thrown on the floor while smoking a pipe, guilty. During a birth, you should clamp the cord in the middle in two places and cut between the clamps. If she would have just held the baby on her chest for a few minutes, the placenta would have come out and the cord serves no purpose after that anyway. To be charged with murder, it most likely will be something more than just stupidity.
For whatever reason, reporters love to post stories with almost no information. IMO, the reporter wouldn't know what to do in an emergency birthing. The level of education of today's Millennials is frightening.
Even is she realized the baby was bleeding out, she may not have known how to stop it.
There are just so many unknowns in the story but IMO, murder involves intent and I don’t know that deliberate intent could be proved in this case unless there were really extenuating circumstances.