Please do not use Loperamide if it is because of infectious etiology things may worsen.. Age and background medical comorbidities were not mentioned.. Any blood in stool? Make sure she is not dehydrated.. It can be Acute Gastroenteritis.. Infectious colitis.. Or IBD.. However possibility of COVID-19 can not be ruled out.. Infection? At Vaccination Centre..
Next Steps
Please seek medical consultation offline or online at the earliest
Health Tips
Monitor her Vitals till you seek medical advice