You do not leave the bed because it is the marriage bed. Are you leaving the marriage ? No. So go back into it. Plus it is a place where you can get a good night sleep. Or a good night staring at the ceiling.
You are not creating conflict here. You are making a choice. Declaring an action and acting on it. If she decides to fight you on it. Then she is making a choice for conflict. You say what your going to do and act. Or you act. But you are going to reclaim some pride in yourself.
Now another problem your having is that you are avoiding anything with her and being all mickey mouse like. Your bending over backwards and showing you have no spine.
Bad behavior is bad behavior. You need to call your wife out on it. If she is not pulling her weight do not cover for her. It is unreasonable for one person to pull all the weight. So communicate that. She is an adult. She lives in the house as well. She needs to do her part.
You need to be a man here and explain this. Go read hold onto your nuts or any other self help books for men. No more Mr. Nice Guy etc...
She is showing you that she has no respect for you. And you are showing her you have no respect for yourself.
Do not argue over it. Explain it. And then only act. As she will test you.
With ladybug I called her out on it. And she said she would help out. She did not. So informed her to sleep in another room and use the adjourning bathroom. I did not clean it. I did not clean up after her. I cleaned the areas I used. And just verified that her areas did not have anything that would attract bugs etc...
See your being a nice guy who uses passive aggressive behaviors. One of your main growths should be how to overcome this and never do it again. It poisons all relationships.
Do not reward bad behavior. Stop being her friend. Being a lighthouse means being a husband not a wimpy man.
Flowers always make people better, happier, and more helpful; they are sunshine, food and medicine for the soul. unconditional love is awesome!