Get a second opinion for sure.
I have heard of people using Lysine for cats with snot problems.
Also, running a hot shower with the bathroom door closed and you and kitty inside will give her a good steaming and maybe enable her to clear out more stuff...which would hopefully mean less around the house!
"When I think of Mick Jagger still singing that he can't get any satisfaction in over forty years of being in the Rolling Stones, I have to conclude that he's either lying or not all that bright." -- Henry Rollins