A few points on EMS protocol from "newbie" Sandrine who loves all the sharp thinking here! Rescuers can not enter scene until scene is "safe" so if there is ANY question as to whether a hazard might exist at the scene (criminal lurking, biohazard...) EMS responders enter only after the police or fire have cleared the scene.
Also, EMS crews trained to leave evidence in place if at all possible. The pic shows me a medic either putting away or getting out gear. "In distress" would indicate possibility of respiratory distress or even cardiac arrest, not necessarily any hope of being resuscitated. Noose probably no longer restricting her airway/breathing or had been loosened.
She had every reason to commit suicide. A beloved child died on her watch. Simple. But the bindings? The nudity? Not clear.
Family telling a reporter all was well, standard. It's like they aren't going to give anything away when they don't know themselves how she died and may not want to believe by her own hand and don't want the media to make the case. Also, Asian families are very private.
The only real anomaly I see here is that she was bound. Even that she was naked might be explained by time of day-- if she'd gone to bed naked or she had just taken off nightgown and been seized by the compulsion to suicide, unable to resist for one more moment that impulse which had overtaken her as soon as she discovered the little boy's traumatic accident.
Attempting to kennel the dog make sense if she was feeling she might harm herself.
PS
Loved the comment re: possibly symbolism of the nudity and violent manner of death -- I had intuitively felt had something to do with "naked shame" but did not know there was a tradition tie-in.