Is the rash bothering her? If not I wouldn't apply cream to it unless advised to do so by the pharmacist or doctor. Sometimes cream can block the pores and make it worse. You need to work out what has caused the rash. I would stop using the bubble bath and go back to using the old washing powder. You can get natural bubble bath and soap called Aveno which is also good for children with eczema. I think it is sold in Boots or if the rash is confirmed to be eczema the doctor will be able to prescribe it.