A Handy Ma'am is on par with a Handy Man. She may be handy in any variety of work. If something needs to be done well then get yourself a Handy Ma'am.
Example would be:
Handy Ma'am Massage
Handy Ma'am Roofing
Handy Ma'am Pet Care
Handy Ma'am Interiors
She is a handy ma'am if I ever saw one, like Rosie the Riveter.