My kids had really bad allergies when we lived in Georgia. I gave them low doses of children's zyrtec (their pedi told me the doses) and it helped. They still sneezed and were stuffy, but it helped. I don't know if that would help your daughter though if she's already on allergy meds. I've got really bad allergies (all symptoms you described for your daughter) and I just deal with it after taking zyrtec. I noticed a difference when i'm not on the zyrtec, but being on it doesn't take all my symptoms away either, just lessens them. I feel for her. i hope you find something that works soon. Allergies suck