In many cases, where addiction is involved, there is such a violation of trust. And it takes a very long time for trust to be recovered. You feel how you feel.....there's not a right or wrong in feeling a certain way. It's a good thing to examine those feelings and understand them.
I hope that you are seeking help for yourself through the family programs at the rehab she is in or at Naranon or Alanon meetings. Early recovery is a tough road for the addict and for the loved ones. It tends to work much better if both parties are in recovery programs that are working in the same direction.
Stick around.......just as she needs support from others who are experiencing the hardship of recovering from addiction, you may find comfort here at SR with people who understand the hardship of loving an addict.
gentle hugs
ke