Be,
Bring a box of kleenex, and a nail clipper, and tell her (nicely) you think she should use them.
Suggest a good sinus medication, if you know of one.
Then if that doesn't work, ask your guides to block out all of the noises that bother you.
You being annoyed, isn't so much about her, as it is about you, and what triggers it for you. After all, there are always going to be people who bite their cuticles, etc..
You can choose to be annoyed and hide it, or you can choose to be happy.
>;-)
Blessings,
Priestess