It is very much OK for a wife not to abort the embryo. Though fetus is not formed, the life starts at the conception of an embryo. One cannot force the wife on any ground to abort the embryo, it comes under mental, psychological, emotional and physical cruelty. Physical cruelty, becaause at the initial stage of pregnancy when wife is adjusting with the physical changes, such harassment and pressure, results in adverse physical condition also.
Your query has been very elaborately replied by one of the finest advocates here, i.e., Suchitra ji. Posting another thread with the same query would not fetch you any different reply. It is within the right of the wife to continue her pregnancy; there is nothing wrong in that. You cannot leverage any legal benefits on the ground that your wife did not obey your orders to drop the unborn baby.