Welcome to HCM,
After going through your daughter's history, as she was hospitalized, I am sure she must have been investigated and treated accordingly.Blood in stool
if it was really massive then should be investigated by proper examination like proctoscopy and colonoscopy
to find out the cause and if bleeding is in upper part then endoscopy
may be required.
If she is feeling severe lower back pain
then you may be required for further testing with MRI
of back to see if anything is not missed.
in the meantime continue the treatment.
Hope this helps and
please take very good care of her.
Dr,Akhilesh Dubey M.D.