RUGER SR9C would be perfect for her.
I am a Life long thumb safety supporter and can't be swayed otherwise (based on personal events)
also if you wanna sell that S&W with thumb safety, I will take it
Tisas makes an incredible GI 1911, all forged. I have the DB45R (duty sized, 45, with half rail) and plan to get another in stainless soon. They also have a GI version as well. IMO feels sturdier than Rock Island