Jane has been clean and sober for three weeks. after a stressful week, she is overcome by the need to have a drink and ends up giving in, falling back into her addiction. this example demonstrates

The answer is a relapse. A relapse occurs when a person who has gone into recovery or has been sober for a long time goes back into abusing drugs and any addictive substances. This can also be seen in patients who had shown a period of health improvement goes back to deteriorating state.