Nice warm steamy showers and a saline nasal spray might help with the blocked up part. Isnt that not quite able to cough hard enough frustrating? I find myself trying to finish their cough With DS I warmed a towel up, put him chest down on my lap with the towel on his back, head down slightly and patted him firmly (not hard obviously) like a bit of massaging 'hand chopping' motion.

Hope she is better soon. It is awful to watch