The Velvet Trap(1968)

Put upon greasy spoon waitress Julie gets raped by her drunken short order cook boss. After managing to escape, Julie hooks up with regular patron Brad Collins and heads off to Las Vegas for an impromptu wedding. However, Brad leaves Julie high and dry in a cheap motel the very next morning after coercing her into posing for a few nude photos. But that's just the start of poor Julie's woes.