Being required to write poetry can cause extreme suffering in others. If this is the case, I would suggest to Mrs.Monica as well as any others who consider themselves incapable of writing good poetry to check out Sandford Lynne’s(?) poetry activities. He provides the bait and then sends you out as a writer to catch something with that bait. He walks you through a process step by step, and even the most reluctant writer can be a poet through this process.
In order to "crack the code" of a poem, one must find the controlling metaphor. That is, one should try to understand what is subtly being compared to what. Often what is being said in a poem is metaphoric for another idea or concept or place or thing. If you can figure out what is NOT being stated, you will "crack the code" and understand the poem.
It would be helpful if you could clarify why you are posting. Are you suffering from the study of poetry? From being required to write it as an assignment?
Poetry can be a joyous pursuit for study or it can be a crippling burden, depending on how it is presented. I took a creative writing course in college and found that I am a terrible poet, despite my gift for being able to analyze others' poetry quite well!
A person can suffer from poetry, just as a person can suffer from food when forced to eat food which not hungry or the food is no good. One can also suffer from food when one likes food very much and eats more than what is good, resulting in stomachache in short run and obesity in the long run.
I do not know in what way 'mysterious' is suffering from poetry. But I can say one thing with confidence that, sufferings of mysterious should not be considered as reflection on nature of the entire collection of poetry.
Poetry reading and understanding are different things. For better understanding of poetry, you can practice these following steps:
(1) First, read out the poem loudly watching the punctuations carefully, (2) Read it now slowly, softly and more carefully, and point out the particular phrases or words you find difficult, (3) Find out these words' meanings, look at the footnotes (good books do provide better footnotes), (4) Read the poem for the third time again. As you know the denotative meanings of the words or phrases now, it will seem less hard. (5) Lastly, write a note on your own understanding of the poem, then check it using other critiques. If you think that, you were wrong at some points, then, correct them immediately, and read the critiques for better understanding.
Thus, your power to comprehend the poetry will develop for sure.