Heh. Poor Chango. Try not putting it on her at first. Just hold it out so she sniffs it, then give her a treat. Repeat it a few times. Then hold the nose loop open and lure her to put her nose through for a treat. That can be enough for one evening. Slow and steady wins out! Eventually she will be "YES! Halti = WALKS!". The Fiend will leap up and spin around in the air to land in a sit in front of me to have his harness put on, because walks are the awesomeness that outweigh the indignities of necessary technology.