Holding of stools through out the day might be one of the reasons, as holding causes the stools to become hard, dry and bigger. So its better if she evacuates her bowel as a routine in the mornings before she goes to her day care.
Check with your doctor if she has and Anal Fissures- as anal fissure will cause intense pain and cause fear of passing stools- which in turn leads to holding of stools and that in turn aggravates the constipation
. If she has a fissure, it has to be treated with local anesthetic
gels and a stool softener
for a minimum period of 3 weeks.
Dietary modification is a must. Her diet must contain lot of fiber- fresh fruits, vegetables, fresh fruit juices, soups, food from whole grains etc.
Avoid junk food, tinned food, high fat food, potato, banana etc.
Plenty of plain water should also be given.
Stools when infrequently passed- may themselves cause offensive smell and have a dark color. If its sticky and floats even after correction of constipation, you might have to rule out fat malabsorption
Yes, as your doctors suggest, she might need laxatives and stool softeners for few weeks.
If problems persist or recur after usage of medications, you doctors will suggest further investigations.
Hope my answer helps you.