If you just turned on your furnace, did you put in a new filter? Could she be reacting to turning on the heat?
Put a bed pillow or a couple of beach towels *UNDER* the top/head of the mattress to *slightly* raise her head when she is lying down. An essential oil in the vaporizer, like lavendar, or even peppermint. Saline nasal drops. Eliminate all milk products during the snotty part of the cold (yogurt, milk, ice cream, grilled cheese, mac and cheese, pizza, etc etc etc).
Vicks is a petroleum product (so is Mentholatum), so if you're avoiding petroleum products on your child, you'll want to avoid those.
Never use tylenol--it quickly depletes the livers stores of glutathione and sulfate, which support the immune response. (Never give tylenol with vaccinations, because some vaccines deplete glutathione and sulfate, a double whammy on the immune system, and one of the theories being considered in as an early trigger in regressive autism.) google "glutathione + tylenol" or "sulfation + tylenol".