Married 32 years here. Only you really know the girl, but...a gift of this type needs to have high sentimental and lasting value. Is this what she'd really want? If so, okay.

But please don't make the mistake of not understanding her, or giving a gift that reflects more on your desires than on hers. Do you have a backup plan?

Are there things about which she's really sentimental? A particular piece of furniture from a great grand parent that might be restored, or a piece of jewelry that has great meaning to her or to your family? Just offering you an alternative perspective...