Rehab or no rehab, her actions in the YEARS to come will show what tools she is and is not using.
It took almost 3 years before my parents and family actually started to trust me again, based on my actions for those 3 years. My willingness to commit to 'things' and then keep my word and show up on time. My changes in my attitudes.
Ignore her words and watch her ACTIONS and REACTIONS to things going on in her life. You continue to work on you as you have been. Hopefully one of the organizations will fit your needs so that you can also have some face to face contacts for you.
Also, something else to keep in mind, when the A starts using, at whatever age, that is where they stay emotionally and mentally. Slowly in recovery they start to 'mature' and start acting and living and responding like adults, not teenagers. Right now she sounds like a teenager and I suspect that is when she started using her DOC.
Remember we are walking with you in spirit.
Love and hugs,