Who plays Becca in Mare of Easttown?
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Madeline Weinstein: 16 facts you need to know about the Alex Strangelove star

17. Who plays Becca in Mare of Easttown?
Madeline Weinstein is the actress who plays Becca in Mare of Easttown. Becca is Siobhan's high-school girlfriend in the hit miniseries starring Kate Winslet and Evan Peters. [HBO]