Hi Chalazion is caused by inflammation and swelling of oil secreting gland on eyelid. The duct draining the oily secretion get blocked by hardened secretion. Further secretion of the gland accumulates and make the gland enlarged. Sometimes small chalazion decreases spontaneously when the duct reopens. Hot compression may relieve small chalazion by reopening the duct. You may try this by wetting a clean and washed cloth in warm water and compressing her affected eyelid 3 to 4 times a day. Please clean your hand well with soap and water before the process or you could infect her eyes with another organism. Chalazion, which does not regress but increase in size, need surgical removal. There is no other way to treat it. The surgery is very minor one. General anesthesia is the choice in small kids to make them calm during procedure. Other option like local anesthesia is done in adult, but not possible for kids. The surgery is safe and has very few complications.