If Looks Could Kill by Jennifer Griffith

They say everyone has a doppelgänger. Hers was a killer.

With only sixty-three cents in her pocket, Molly is way down on her luck. No job, no food in the fridge, no power at her cold, dark apartment. Her mom won’t take her calls. Her ex only lives in her memories.
Worst of all, she might be getting evicted.
At the grocery store, a posh woman approaches Molly. “Wow, we look so much alike.”
Indeed, it’s uncanny.
The posh lookalike, Hester, offers to buy Molly lunch so they can chat. Who’s Molly to turn down free food?
“I’d give anything,” Hester sighs, “to get away from my life. Just for a weekend.”
What kind of life? A great job, a fancy house, a very attentive rich fiancé, Cyrus, whose name sounds familiar to Molly. But so much pressure.
“Just for a weekend?” Molly asks.