remedy4reality thinks a bomb hit that building because no orphans were killed.

Unfortunately, in actual reality that was not an orphanage. It was an office building. The NPH orphanage is a 30 minute drive from this location and was not damaged by the earthquake

There's plenty of evidence of earthquake damage in Petionville.

http://www.telegraph.co.uk/news/worldnews/centralamericaandthecaribbean/haiti/6977308/Major-earthquake-off-Haiti-causes-hospital-to-collapse.html

An AFP correspondent in the nearby town of Petionville said one three-story building had been toppled, and a tractor was already at the scene trying to dig out victims as people fled onto the streets in panic.

A hospital collapsed near the epicentre, and cries of people within the structure were reported by witnesses.

This damage map shows Petitonville as having experienced violent shaking only one category down from the worst category, extreme. https://media1.britannica.com/eb-media/73/136073-004-57489415.jpg

http://www.nydailynews.com/news/world/haiti-struck-earthquake-buildings-collapse-hundreds-believed-dead-article-1.460933

In the hilly neighborhood of Petionville, where a hospital fell on top of screaming patients, a visiting U.S. federal official said he saw a number of homes collapsed into a ravine.