What do a vintage chamber pot and true love have to do with one another? A lot, if the aforementioned porcelain item was once used by Elizabeth Barrett Browning. That’s what Abby Randolph, a small-time antiques dealer, discovers when she lugs it to the Antiques Road Show. After a dealer there appraises it at $75,000, her life turns upside down: A relative sues her for the chamber pot, and two difficult old boyfriends reappear — one had humiliated her by turning her life into a novel; the other pilfered her mail and erased her phone messages. Mameve Medwed’s romantic comedy. How Elizabeth Barrett Browning Saved My Life is slim on plot but packed with raffish charm.