Hello,
Thank you for consult:

 A – Antibiotics are generally not need in case of an allergic reaction. I assume that there is no pus collection, pus discharge, active wound or red eyes. If any of these symptoms are there then you might want to give her the antibiotics. If not then you can just skip the antibiotics and observe for the remission of symptoms.  If in doubt, you better follow the Doctors recommendation since he/she has clinically assessed the patient.

B – Claritine and Primalan, both have more or less similar actions and profile. So you may continue with Claritine itself. Please make sure she is getting adequate dosage.

Hope this helps. Thank you.

Since she is already on antibiotics no eye drops are required. Especially since the primary problem is non ophthalmic, it is better not to instill anything externally to the eye. The oral antibiotics will take care of any possible infection.Congested ear (possible acute Otitis media)+ Possible pus collection + sensitive area (eyes); So antibiotics are right way ahead.

Wishing her a speedy recovery. Thank you.