Two suggestions for you:
1. Just tell her, in no uncertain terms, that YOU wear the pants in the family and if you want this lens, you are going to buy it, that is just the way it is.
2. Hand her the new piece of Diamond Jewelry that you bought for her just before you open the box with your new Lens.
One guess as to which method I use .... :wink:
Just buy it and beg for forgiveness. :wink:
Amen brother. It's the only way to fly!