All perfect praise be to Allah, The Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad is His slave and Messenger.
Our advice to this dear sister is that she should endeavor to supplicate Allah and to get closer to Him as all the good is in His Hands.
She should be patient with what she is suffering from, and she should know that if this tribulation is compared to the blessings that Allah has given her, then it is a very minor thing. So she should ponder over the blessings, favors, and virtues that Allah has blessed her with so that she would strive in thanking Him.
She should know that she will be rewarded for every affliction that affects her if she is patient and seeks the reward of Allah for it.
Then she should endeavor to consult the trustworthy doctors, as she might find someone who can treat her problem, as there is absolutely no illness except that there is a cure for it.
Allah knows best.