Maybe It's Maybelline Walker : Season 4 Episode 2

When Maybelline, an 80-year-old grandmother and witness, is in crucial need of protective custody, Walker, Cassie and Trey are charged with keeping the acerbic matriarch safe, and though Walker and crew call the plays, the wise elder is the one keeping score. Cassie grapples with a big decision and asks Geri for help to make some changes. Meanwhile, Stella wants to move on but continues to struggle with her grief and Liam tries to help. Lastly, August wants to join an after-school program and asks Bonham to help convince Walker to sign off on the program.