'Night Mother: A Summary

Following Dr. Burton's suggestion to summarize the text, here is Marsha Norman's 'Night Mother in my own words:

There are two characters, Jessie and Mama (Thelma, but referred to as Mama throughout the play). In a small home in the middle of nowhere, Jessie and Mama live together. Jessie is semi-recently divorced and Mama is widowed. The play takes place in the kitchen/living room of the tiny home they share together.
Nothing has worked out for Jessie. She is very ill, suffering from epileptic seizures most of her live. Her loveless marriage ended in a divorce. She has recently lost her job. And her son is always off getting into trouble. She is very unhappy and has come to a decision that she will ultimately end all her problems by ending her life. This idea has brought her comfort, the fact that there is an end in sight. When she calmly tells her mother of her plans, Mama refuses to believe it. When it is made very clear to her by Jessie that she is set on suicide, Mama is in despair. She tries to reason with her and argue with her and beg her not to. In the end, though, Jessie goes quietly into her bedroom and shoots herself as the play is brought to an abrupt ending.