In a situation where both your mother and your wife are lost in water, it is a difficult and heart-wrenching dilemma. However, as a general rule, you should always prioritize helping the person who is in the most immediate danger. This may mean assessing the situation quickly and determining who is in the greatest peril and needing assistance first.
It is important to keep in mind that in such a situation, the best course of action is to try to save both individuals if possible. If you can enlist the help of others, you may be able to rescue both of them in a timely manner. However, if you are alone and only have time to save one person, it is critical to prioritize the individual who is in the most danger.
It is important to remember that every situation is unique and there may be specific factors at play that require you to make a different decision. In such a difficult situation, the most important thing is to act quickly and make the best decision you can with the information you have available to you.