Shall rinsing with neti pot everyday make my daughter dependent on it or it can be stopped once the allergy season is over.

Sinus rinsing is not habit forming. It is an effective personal hygiene system that we recommend for everyone throughout the year. If your daughter is comfortable with it, it is safe for her to continue sinus rinsing every day or several times a week after allergy season is over. Or she can use it only when she has allergy symptoms.