Is it obligatory for a Muslim woman to bear all these burdens and difficult circumstances that have led to her loss of happiness and self-confidence?

What you are experiencing may be a trial and a test to elevate your ranks and expiate your sins. Therefore, you must be patient and content with what Allah has decreed for you, for the believer's entire affair is good. If adversity befalls him, he perseveres, and that is good for him. True happiness is in the Hereafter, and you must follow Allah's commands and avoid His prohibitions, for that is a cause for the expansion of the chest and the tranquility of the heart. You must also recite supplications and remembrances that alleviate worries, such as the supplication of Ibn Mas'ud: "O Allah, I am Your servant and the son of Your servant...", and the supplication of Abu Umamah: "O Allah, I seek refuge in You from anxiety and sorrow...".