Morphine 1) 1920's: Not entirely sure, actually. Probably flitting about with Heroin/Cocaine and/or reuniting with Opium closer to 1930?
2) Victorian Era (1837 - 1901): In the late 1830s until the mid 1850s, hazy memories but in America. 1862, in Philadelphia at Johnny Reb's first death (where Johnny called her "Bliss" and so that became her name), and was everywhere during the Civil War, either appearing by the sides of the dying or working as a nurse in shabby make-shift hospitals. Anyone involved in the Civil War might have encountered her, so I'd be open to working on that! She met Laudanum late in the war, at a hospital most likely. Cocaine and Morphine ("Viola Bliss") met and lived together in the mid 1880s in Cape Cod, Massachusetts, where Heroin found Morphine later in the 1890s.
3) 1960's: Working as Mae Seturner at Seturner Pharmacy since 1940, in Columbia Falls, Maine. In 1965, she met an Ingrid Jenkins, became involved with her. In 1967 they were in Monterey, California (though not at the Monterey music festival), and after that, Kauai, Hawaii, then Boston, Mass., Mae Seturner was arrested for illegally dispensing narcotics in December of 1967, turned in by Ingrid and in jail until 1969, when Heroin assisted her in escaping. "Mae Seturner" died in 1970. Busy decade.
4) Two months before they arrived in NYC: She's actually been in Brooklyn since 1995, when she opened her private practice as Phaedra Paderborn, but remained beneath the familial and immortal radar and still does, to a point.
I'll post others later. Morphine's past is the most worked out, others won't be as detailed. (Most likely.)