The treatment could be sufficient for common cough
and cold / flu
. But, get her examined by a doctor ,if not done yet. There might be other sign, symptoms, complications which you are missing.
should not persist more than 6-7 days.
You should also check that you are giving right doses of medicines.
Please note, medical errors like overdosing, underdosing, side effects and drug interactions are very serious in children. Don't use any medicine unless prescribed by doctor.
Feel free to post if you have other queries.