S.E.
I would get to the doctor or hospital.
Back when our son was less that a year old he when to be with no fever and less than 2 hours later he had a fever of over 105 and went in to a seizure like the more you are describing. The body becomes limp and almost life less. He just was limp and we rushed to the hospital. They got the fever down as fast as possible and found out it was an ear infection that caused the spike in his temperature.
My thought is with your daughter is that she has some kind of infection. Because you say the stool is stinky that sounds like it is in the intestines. ((When you get a urinary tract infection on of the signs is stinky urine and you can get a fever.)) But I am not a doctor so I would go see hers again or take her back to the hospital.
S.