The LC9 did not have a recall, the LCP and the SR9 did. The Ruger LC9 is a good pistol. Recoil is very subjective, compared to a full size .40 I think if she can handle the .40 she will be able to handle the LC9. Although in my experiance much of recoil is assosiated with how the gun is gripped and this gun has a much shorter grip then a full size weapon. The biggest problem I see with the LC9 is so many people joke about it having a recall that it has become the almost truth. Ruger is a fine company and they do not hide the fact they have problems when they do like other companies do. LC( has not had a recall. not once.
If she likes it I would have no worries getting it for her if I were you. If my wife asked me for one and had held it and liked it I would spend our money on one for her in a minute.