Is it obligatory to inform my relative's fiancé that she had cancer in her childhood and recovered from it, and that she cannot conceive for fear of transmitting the disease to her children, knowing that she does not wish for this due to her psychological state? And is it permissible for the fiancé to contact her by phone to get to know her before he comes to Egypt?

If a woman is cured of cancer and there is no harm from it to whoever marries her, then she is not obliged to inform her suitor of what afflicted her previously, nor to refrain from pregnancy for fear for her children, if she is able to conceive. However, if she cannot conceive, there is a difference of opinion among scholars regarding the obligation to inform the suitor of this. Some of them believe in the obligation to disclose any reprehensible matter, while others do not see this as obligatory except for defects that establish the right to annulment.