It is not permissible to abort the embryo, unless not aborting it would cause a danger to the life of the mother. Furthermore, it is not permissible for the mother to take the medication which harms the embryo, unless the mothers fits causes the danger of death for her. If it is possible to tolerate the fits or to prevent it by other ways, then it is not permissible to use the medicine that cause harm to the embryo.
In the said cases, the husband can appoint an agent (wakil) of his by telephone or writing, and this agent can pronounce the divorce on his behalf in the presence of two adil witnesses, ensuring that the other conditions of divorce are satisfied.