Q: Context: After dropping off their daughter Maddie (Molly Gordon) to her senior year at Decatur University in Atlanta, Dan tells Deanna (Melissa McCarthy) that he wants a divorce because he has fallen in love with another woman, a realtor Marcie (Julie Bowen), and he also wants to sell their house under his name. Heartbroken, Deanna visits her parents Mike (Stephen Root) and Sandy (Jacki Weaver) to tell them what happened, but Mike is frustrated because Dan made Deanna drop out of her college because she was pregnant, as well as his overbearing ways during their marriage. Deanna goes to see Maddie in her dorm to tell the news about her divorce and her plans to study again at the university to earn a degree in Archaeology. Maddie initially has doubts about her plan but she ultimately accepts it. Maddie introduces Deanna to her friends-Amanda (Adria Arjona), neurotic Debbie (Jessie Ennis), and Helen (Gillian Jacobs). Deanna later meets her agoraphobic and chronically depressed roommate Leonor (Heidi Gardner).

Question: who plays sandy in life of the party?
Let's give stream of consciousness below
The relevant sentence in the passage is: Heartbroken, Deanna visits her parents Mike (Stephen Root) and Sandy (Jacki Weaver) to tell them what happened, but Mike is frustrated because Dan made Deanna drop out of her college because she was pregnant, as well as his overbearing ways during their marriage. So the answer is Jacki Weaver.