Thank you for your elaborate history. Usually excessive urination is due to excessive drinking on children.
Good to know that you did not mention that she is in pain or discomfort while passing urine and nor is she having fever/vomiting/I’ll health
Next Steps
If this persists and it is a worry it could help to get a urine routine and microscopy sample sorted to rule out sub clinical urine infection ( mild type) and that will look for
sugar spillage in urine which you be indicative of high blood sugar which sometimes drives excessive urination.
Health Tips
Continue to monitor fluid intake and general health.
Check for temp over 99.5F is she looks unwell