Children can have Allergic airway hypersensitivity due to which they will have wheeze. It cannot be termed as asthma yet. She can have chest infection also that might be the cause of wheezing. With proper oral medications (antihistamines, nasal sprays, nebulisation and if required antibiotics, she should be fine.
Next Steps
You can visit an ENT specialist to treat her Allergic Rhinitis and Adenoid. Assessment of Adenoid Hypertrophy is essential if she has frequent allergies. If Adenoid Hypertrophy is of Grade 3 or 4 adenoidectomy (surgery for Adenoid) will be needed which will in turn help in allergy improvement a great deal