Hello again...Your daughter seems to be the manipulative type of individual and can get everything that she wants unfortunately. You have done so much for her and in fact you also were used to your daughter's advantage. Sometimes as parents, we must release the reigns on our children and simply let them live their lives on their own and learn from their mistakes. Since you find if difficult to talk with your daughter, then you should possibly try writing her a letter explaining how you feel. You might first try calling her on the telephone. Whatever you do, just behave cordially to her at work. The last thing that you want to occur is to make a scene at work. Just let your daughter know that you will always love her as her mother but you are hurt because she has done "XYZ". Give your daughter a chance to respond. if she is really defensive and becomes upset, suggest that you communicate with her at a later time when she has calmed down. It is difficult to change another individual. We can only change our reactions to their circumstances.
Hope this has provided some insight. If you need more assistance, let me know. Thank you.