My sister was hospitalized for the exact same condition as your daughter- I think Penny had neutropenia caused from treatment. Her count came up within a few days if I remember- all I really remember was the fright. I know Penny's dropped even lower than you mentioned. Just be strong-know that this is all part of it. In regards to the secretions this too I know was a constant for her for a while, I think she had a humidifier running, and also she was told to rince with baking soda and salt water- this supposedly will "deactivate" the bacteria-truly I'm not sure if this worked since she could barely put anything in her mouth, but from what I've read I think it's worth a try- Be well and ask your Dr's and then ask again and then ask some more!