Getting my dog used to doggie jacket

You could try conditioning Misha to associate the jacket with something good like her favorite toy or playtime. Is she toy driven or food driven? Either way, if one isn't as effective, you could always go for the other.

Speaking of, have you tried entering Misha in a mini-agility courses?It seems that when she's doing something physical, her attention is focused to that activity. It makes getting accustomed to something foreign a lot easier.