Frank's fate wasn't communicated as well as the first...

In the first the same thing happens with the mannequins coming to life and ripping him apart and then they reveal that was just a hallucination and he actually stabbed himself.

In this one it just shows him sitting in a closet with blood all over the left side of his face. His arms seem to be intact which would imply that him being attacked was a hallucination but it doesn't really show how he killed himself, if he did.

They should shown a knife or something in his chest. Or a gunshot. I tried all I could to see if there was anything there but couldn't see. I doubt that the mannequins tearing him apart was supposed to be real, that'd just throw the whole film off. But like I said, they don't do a very good job at communicating how Frank died and I doubt that they actually intended on having the mannequins come to life be real