The answer would be A. Heart Failure.
If she isn't feeling good at the present time when she is at the Drs and he asks to give it.
The most likely to occur is depression. While the other two symptoms may appear, depression is a common mental impact after a traumatic event happens to a child. Treatment of this effect can be via therapy and/or depression medication though not necessary.
To make sure there are no other dangers in the vicinity of the victim.
The late stage is where the body and the mind start to fail. It could take weeks or maybe years to get to this stage.