Well sorry to say but she's un happy about something that has nothing to do with you, your harley or the kitchen fucking sink!
She may not be heard on something because she's not opening her mouth (of course you are suppose to be a mind reader) feel like going in fucking sane yet???
OMG Z this is kind of funny because I appreciate the fact that you would be going mad but are you asking a question thats gonna get her talking??? this is maybe what she needs and a little... you know...
How long you been together??? if not long then hey your loss her loss, if you have been together a while I would be telling her to wack you over the head with the fry pan (nah just kidding) you see we are all NUTSO
So just let it go and then call us NUTSO we are NUTSO so be NUTSO back! until she gets over it.. or she gets a bit or you give her a bit or you maybe take her for a ride on that harley of yours and talk to her about whats bugging your ass about her behaviour - COMMUNICATION IS THE MOTHER OF LIFE Z use it a little maybe I dunno... (it's still funny honey but its serious I understand)
Sounds like she doesn't want you to buy your Harley but she's afraid to come out and say it. Sounds like she's waffling instead and then laying on the guilt hoping you just won't buy it. Ask her straight up if she just doesn't want you to buy your Harley and if she wants the money spent on something else. Maybe she'll be honest this time...
Sorry she's driving you nuts!!! Sounds like something my mom would do to me...
Z - that is kind of strange, maybe she is going through something like purr is saying, maybe she just doesn't know how to say it to you.
Could be the perfect chance to ask some important questions... maybe she feels as though she deserves something, mid life crisis her self (the change)
It sounds a little more complex though and I can't provide advice but I hope it doesn't ruin such a long relationship Z, maybe ask yourself the big question of what your relationship is, where is it going, what would you like it to be and how would you like to bee with her - then tell her everything you realise....