I guess there's more to it than meets the eye. It can be a conspired murder too.
Yesterday i watched a movie named "Waitress" starring Keri Russel as the lead. The director Adrienne Shelly, who was also cast in the movie, was murdered in her apartment way back in 2006.
She was found hanged in her bathroom with a bed sheet wrapped around her neck, tied with the bathtub overhung drape bars.
It looked like a suicide to everyone, and had no suicide note just like the case here. US police eventually with careful investigation, found the culprit to be a 19 year old mason who worked at a construction. He was Adrienne's neighbor or something and killed her when she caught him stealing from her purse.
This could also have some sort of history like the above and if police investigates the matter properly, then maybe they can find some concrete details to rule it as a suicide or otherwise.
RIP