I understand you're afraid of getting hurt again. And in truth, you're not over your XW.
Asking her out to lunch will help you on that road to healing. If things don't work out, so what? You made a move forward. That's the main point. The thing about your pet rat is sweet, but again, you're putting more emotion into her than you are into humans. It's time to move forward.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.