You do not need to tell her how YOU feel. She doesn't really care right now how you feel, she just knows how she feels. I have no clue if she has OM or not, you will have to decide that or figure it out. However, from some of the info on your posts, 2nd job, financial difficulties, etc, it is certainly possible she has felt financially insecure and neglected.
However, SHE must initiate a conversation on this. Most likely if you initiate it, she will react angrily.