What Lexie said.
Addicts don't like it when co-dependents change, stop enabling, and start to take new steps to find their best fulfillment in life. She might feel threatened by that. I don't have any sage advice for how to deal with that except just try to have good, helpful communication with her as best you can. You really do need the support of others who understand, just as she needs the help of others who understand what she might be going through.