Personally, I think buying the wife/girlfriend a snubby revolver is one of the most common mistakes made in the gun world. They DEFINITELY kick more than a G19 or G26, even with standard pressure Remington UMC .38Special. They have a tiny handle, they usually bite your right thumb with the cylinder release, and they are hard to shoot well. SO MANY guys buy these guns for their women, and almost all of them shoot it, get scared, and never use it.
YOU DO NOT NEED TO BUY HER A GUN!!! SHE NEEDS TO PICK OUT HER OWN GUN!!! That is the problem here. You are buying what you THINK she needs, but you are not a girl. We (men) still can't figure those crazy women out. What makes us think we are qualified to choose a gun for them? In my experience, most girls like shooting Glocks. Even .45ACP Glocks don't seem to bother them. But hand them a .38Special snubby, and after 2 shots, they will turn around and give you that look that says, "I don't like this, do I have to keep doing it?"
Take her to a range where you can rent guns, and rent her some before buying. I have a good feeling a G19 or G26 will be the best choices. She needs to be comfortable shooting it, or else she will be scared of it, and scared of using it, no matter how cute and small it is. Generally, the smaller the gun, the worse the recoil. Even most little .380ACPs will kick more than a G26 or G19, because they are so small. You KNOW she likes a G19, why not go with that? And about the Ruger LCR, my shooting buddy (we shoot almost exclusively 10mm, so neither of us is bothered by recoil) used to have one, bought it as a house gun for his wife, and even he didn't like the recoil with .38Special +P. He sold it.