If she has a spouse, I'd look up his donor records, too.
Already done. See post #13.
And he is her spouse:
Mary O. Mccarthy
6825 Wilson Ln
Bethesda, Maryland 208174948 U.S. Government 03/14/2004 2000.00
Analyst
2000.00
Michael J. Mccarthy
6825 Wilson Ln
Bethesda, Maryland 208174948 Michael Mccarthy Associates 03/14/2004 2000.00
Landscape Architect
2000.00
http://tinyurl.com/lt7fq