Yes, Cialis can help many women, especially post-menopausal women, experience more sexual enthusiasm and more pleasure.
If there's a problem, it is worth a try. You can buy it online. Sometimes it is labelled "Female Cialis," but I think it's the same thing men take. Check with your doctor, of course, but it's not a dangerous drug. Start with a low dose, and work up if needed.
I prescribe it often to women, and I'd guess that most find it helpful. A better sex life can improve a relationship in surprising ways, regardless of age.