Hello, I have taken the time to read your question carefully. I can see that you feel uncomfortable because your colleague spent two people's money. It seems that you have some feelings of anger and resentment towards your colleague, but you have suppressed these feelings. It is possible that your emotions are still somewhat irritating, and your inability to concentrate may be related to your irritability. This could be why you are having difficulty settling down to read. I can understand how you feel.
Perhaps your colleague's use of common money, which you perceive as an infringement on your interests, has led you to view her as stingy. You may have even convinced yourself that if you care about it, you are just as stingy as your colleague. However, your moral super-ego will not allow you to be a stingy person, which could explain the inner conflict you're experiencing.
It seems that you may be suppressing your true feelings, which could be causing you to feel irritated and suffocated. You may even be attacking yourself in an attempt to convince yourself that you shouldn't care, for example, by thinking that you have also done things badly and finding reasons for your compromise. It seems that you are trying to rationalize your compromise.
I would gently suggest that the questioner consider directly telling the other person how they feel and what they think. Asking for your money back does not necessarily mean that you are a stingy person, but rather that you are a courageous person who is able to protect your own interests.
While we can deceive our feelings at the conscious level, telling ourselves to forget them with our minds, the true emotions of the subconscious mind will not deceive us. This means that our mind cannot make our subconscious mind focus on reading or working.
Your subconscious mind may wish for you to find the courage to face problems head-on and break through any self-imposed limitations.
I believe that expressing your true feelings, being brave, and having the courage to be disliked will help the questioner feel comfortable and at ease. You might find it helpful to read a book called "The Courage to Be Disliked."
I hope you can find a way to overcome your difficulties soon. I wish you the best of luck.


Comments
I understand how complicated this situation feels. It's tough when trust gets shaken. I guess sometimes we just need to weigh what's more important, the small stuff or the bigger picture of our relationship and all she's done for me.
Feeling a bit let down by the joint fund thing, but maybe it's best not to dwell on it. She has been quite supportive and knowledgeable, guiding me in many ways. Perhaps I should focus on that instead of getting hung up on this issue.
It's frustrating when things don't go as planned, especially with the fund. But I know I've made mistakes too. Maybe it's time to take a step back, reflect on everything, and try to be more generous with forgiveness.
The way he handled the joint fund isn't right, but arguing won't fix it. Thinking about all the help and lessons she's given me makes me realize I might just need to let this slide and move forward.
Sometimes you have to pick your battles, and this might not be the one to fight. She's taught me so much; perhaps her actions were unintentional. I'll try to overlook it and appreciate everything else she's done.