Hi,
With all respect, don't push her. She might be willing to go out of her divorce gradually, she might need some quiet peacefull time with herself, she might enjoy the freedom she got.
How ever if after some time you don't see any change that would be very nice if you attend to it. Take her out, make other friends do it as well, introduce her to new people. Encourage her, gently, to start living.....
If you are a real frien you must be there when she needs you but give her time and space.
Hope she will find her way and find love and happiness.
Best regards,
D"r D. Oron