...it does not appear that my Mother had a stroke; that according to the neurologists who saw her today.
The internist has hypothesized that she had a very bad stomach virus, that caused her the sickness, and after the loss of electrolytes and fluids (don't ask), caused the fainting spells and spaced-out feelings.
They also checked her heart which seems to be OK.
A few more tests will be run to rule out other possibilities, so baring any bad news, she ought to be coming home tomorrow.
Thank you all for the kind thoughts, and prayers! You guys are the best!