Speaking purely personally.....
I hope you have been discussing "new" cars with her, and have listened to, and taken on board her thoughts and ideas
I would go ballistic if ANYONE bought me a car without my seeing it, test driving it or even saying I liked it
I always go for a car that has a good "feeling" to me
And I'm not saying that in an ungrateful way - just what I think
Please don't be offended, but you did ask