Hi green. I'm sorry to hear of your families troubles.

I agree with what everyone here has said. I don't know if you are aware of Acute Stress Disorder?

It falls under the umbrella of PTSD and meets the same criteria but the emphasis is on dissociation.

Here is some info and a link.

Stress Disorder

This disorder describes an acute response to trauma. It includes the criteria for PTSD but adds and emphasizes dissociative symptoms.

An acute stress disorder may follow any trauma, but a typical example includes a soldier responding to battle, becoming acutely disoriented, and being in a "daze."

Acute Stress Disorder appears to be a good predictor of subsequent PTSD; the presence or absence of the diagnosis predicted PTSD at 6 months in 83% of cases in one study.
The diagnostic criteria are listed below.

DSM-IV Diagnostic criteria for Acute Stress Disorder

A. The person has been exposed to a traumatic event in which both of the following were present:
(1) the person experienced, witnessed, or was confronted with an event or events that involved actual or threatened death or serious injury, or threat to the physical integrity of self or others
(2) the person's response involved intense fear, helplessness or horror

B. Either while experiencing or after experiencing the distressing event, the individual has three (or more) of the following dissociative symptoms:
(1) subjective sense of numbing, detachment or absence of emotional responsiveness
(2) a reduction of awareness of his or her surroundings (eg, "being in a daze")
(3) derealization
(4) depersonalization
(5)dissociative amnesia (inability to recall an important aspect of the trauma)

C. The traumatic event is persistently reexperienced in at least one of the following ways: recurrent images, thoughts, dreams, illusions, flashback episodes, or a sense of reliving the experience; or distress on exposure to reminders of the traumatic event.

D. Marked avoidance of stimuli that arouse recollections of the trauma (e.g., thoughts feelings, conversations activities, places, people).
E. Marked symptoms of anxiety or increased arousal (e.g., difficulty sleeping, irritability, poor concentration, hypervigilance, exaggerated startle response, motor restlessness).

F. The disturbance causes clinically significant distress or impairment in social, occupational, or other important areas of functioning or impairs the individual's ability to pursue some necessary task, such as obtaining necessary assistance or mobilizing personal resources by telling family members about the traumatic experience.

G. The disturbance lasts for a minimum of 2 days and a maximum of 4 weeks and occurs within 4 weeks of the traumatic event.

http://www.medical-library.org/journals4a/trauma.htm