First, it sounds like if the glutathione is not cloudy, then it is alright. The 13th, was not very long ago. It does have a bad, sulfur, smell anyway, but you could always muscle or pendulum test to be sure.
What sort of changes have occurred for your daughter in the last 5 days that may have contributed to her behavior changes? Something has triggered this. Look at ANY dietary, supplement, water intake, social encounters, school, therapies of any kind, changes in the weather, etc. that may have contributed. Does she seem to have any sort of sore throat? Sometimes PANS, or strep. can cause these behaviors.
If you cannot pinpoint it to anything you can change, then see if you can find a natural allergy elimination practitioner (see module 3) and take her to them.