Private sales and gifts of firearms are legal in Ky. As long as you both reside in Ky. and she can legally own the gun, you can just give it to her and that is the end of it. No paperwork or notification is necessary. Guns are sold and given like this every day in Ky. The sheriff's office has no idea who owns what. they don't even know that you own it, now, unless you went there and told them. If you did that, they don't care. There is no gun registration in Ky.