Hi, thanks for using health care magic
Most coughs and colds are viral. In some cases , as part of the cold, persons can develop persisting ear infections, bacterial throat infections or bacterial chest infections that may require antibiotics but in most cases the symptoms are caused by a virus.
In terms of the cough and the sneezing
, it may be due to dripping of mucus at the back of your throat, inflammation in the nasal passages or inflammation/hypersensitivity
of the passages in the lung.If she also has a runny nose with mucus going into the throat that would be contributing to the cough then the use of a oral or nasal decongestant may be helpful.
In addition you can consider using an over the counter cough suppressant combined with an antihistamine.
I hope this helps