Thank you for your query.
There is a misconception among people to stop milk and its products during diarrhoea
. It should be stopped only if the child is allergic to milk.
Diarrhoea can be due to a number of reasons. I suggest you discuss with the treating doctor who must have investigated your daughter and follow the advice instead of listening to lay advice.
I hope I have answered your query to your satisfaction.
Wishing your daughter an early recovery.