Does she seem uncomfortable? Is she still eating normal amounts? And water is a no no. Call her pediatrician if she is umcomfy not eating and not having a normal amount of wet diapers.
She should not b drinking water it's to early but I'd call the Dr
Do not give baby water in between! It's a Def no no!! My son was the same way when he was about 3 wks Dr had me put a tiny pinch of brown sugar in w his milk to get him going but I also had to do a suppository to get the hard poop out .. baby at that point should still be pooping daily and a cpl times a day 5 days is a long time for baby not to poop I would call scabies peds and see what they recommend not every Dr recommends the same thing but that long can't be good on babies belly
Try a lil bit like 1onz of prum juice... it happened to my son when he was about that time and that helped him ,hes 2yrs now ,nothing happened to him