Resignation

Recently a pretty close colleague of mine who is holding a senior position has decided to leave the company. I was told that she got a job with better pay & prospect. I am happy for her cause I feel that she is unhappy in this company anyway. I have utmost respect for this colleague cause she is someone who is very experience and can do the job well. But after she tendered her resignation, there was an immediate change in her attitude. She was in her ORD mood. She started to argue more with my boss and couldn't be bothered with alot of things. I just feel that no matter how unhappy you are with your boss or the company, you still have the responsibility to do your work as along as you are with the company. I could see that she can't wait to go over to the new company and she is no longer interested in the work here. She commented today that even doing the handover list is so difficult. This is because my boss made changes to it twice already. I felt that she is unhappy because she couldn't handover her work so long the list is not ready. I wonder where is all the professionalism that I used to see in her. I really hope that she won't disappoint me in her last 2 weeks with the company. I still believe that she has the integrity to do a good job. I sincerely wish her success in everything she do.