I'm looking for a Miss Ann M. Murphy who taught school in SF, 1867-73. What I know follows. I can't locate Miss Murphy after 1873 -- does anyone have knowledge of this woman? Might shee have married?

Miss Annie M(ary) Murphy b. about 1840 in MA

San Francisco Dity Directory
1867 – Principal at Drumm Street School
1869 – Principal at Drumm Street Primary School (dwl 127 Kearny)
1870 – Principal at Drumm Street Primary School (dwl 127 Kearny)
1871 – Principal at Ocean House School
1872 – Principal at Ocean House School (dwl Mission Road)
1873 – Principal at Ocean House School (dwl 600 Bush)

I’ve been unable to locate her in the 1870 or 1880 Federal Census