Many children have a tendency to catch cold easily. Runny nose is an expression of allergic reaction which is associated with cold. Generally these are due to viral infections. Sore throats are due to acute tonsillitis and often can be cause of the snoring, not due to the nasal block itself. Generally tonsillitis regresses with age. It does not require surgery unless: 1. The episodes of sore throat are disabling and prevent normal functioning. 2. Seven or more well-documented, clinically significant, adequately treated sore throats in the preceding year; or 3. Five or more such episodes in each of the preceding two years; or Three or more such episodes in each of the preceding three years. Get her reviewed if her condition matches the above criteria. A six-month period of watchful waiting is appropriate if the conditions do not match exactly. Antibiotics may or may not be required. Taking some antiallergic like levocetirizine should help. Nasal decongestants like Nasivion drops may be used. Gurgle with lukewarm water would give her some relief. I hope that helps. Feel free to revert back with further queries if any.