I think it sounds like it's all going as it should, i think you've done a lot of work and if her reading you a story helps then go for it. I wonder if she'd tape it for you to listen to on you own when you need comfort? Would you like that do you think?
You've already let her be around your life a lot and your life has improved greatly so I don't think you need to fear than this interdependence will harm you.