welcome to health care magic,
from the description of your childs symptoms she could be suffering from a blood disorder,
- sickle cell disease
- viral infection,malaria
-juvenile rheumatiod arthritis/hemolytic anemias
- heart failure
she needs to be throughly investigated i would suggest you should take her to see a pediatrician
for further evaluation
hope to have answered your query.
wish your daughter a quick recovery.