Thank you for your query,
Your daughter needs evaluation as she is getting tiredness
very easily in comparison to her age children.
She needs to evaluate for anemia
and her respiratory and cardiovascular evaluation.
Anemia due to low hemoglobin
will casue easy tiredness and loss of interest to do routine activity.
If any underlying respiratory or cardiovascular problems are they they lead to decreased performance of regular activities and tiredness and shortness of breathing.
She may need to check for her hemoglobin, x ray and if neccessary 2d echo.
So consult your Pediatrician
for intial and basic evaluation.
Hope I have answered your query.