who was Sarah to Lewis in Shrinking

Sarah was Louis’s fiancée in Shrinking. The show reveals that she was part of his life before the fatal accident, and later flashbacks show that she stayed connected to him for a while after his incarceration before their relationship ended.

What that means

• Sarah is not a family member or therapist; she’s Louis’s romantic partner.
• In the flashback, she represents the life Louis had before the crash.
• Their relationship becomes part of the show’s forgiveness-and-grief storyline.

In context

The series uses Sarah to underline how Louis’s guilt affects every relationship around him, especially after the accident that killed Tia.

Tiny recap

So, in one line: Sarah was Louis’s fiancée , and later his ex, in Shrinking.