Yes, she certainly did.
So did Barbara Bush, who was probably the least photogenic First Lady ever, but she was very visible during campaigns.
Hunter resides in El Cajon with his wife, Lynne. Like many of his constituents, he is in the process of re-building his Alpine home after it was lost in the October 2003 wildfires. In 2006, Duncan and Lynne celebrated their 33rd wedding anniversary and have two sons, Duncan Duane, honorably discharged from the Marine Corps and now president of Boise Hunter Homes, and Sam Hunter, a business student at San Diego State University. Duncan D, and his wife, Margaret, have three children, Duncan Lee, Elizabeth Grace and Sarah Louise, and reside in Boise, Idaho. Sam was married on Valentines Day 2004 to the former Theresa Heger of Jamul and their daughter Marin was born in October 2006.
http://www.peacethroughstrengthpac.com/Biography.aspx
http://reggienation.wordpress.com/2007/05/21/vote-for-duncan-hunter-in-the-primaries-see-you-there/
It is clear our message of maintaining a strong national defense, securing our border without amnesty, holding China accountable on trade, and protecting life are resonating with the voters. Our campaign is one of issues, not flash and expense. We don’t have a jet or an army of consultants and paid staff. We do have the conservative message that is true. In the end, that will be what Americans want.”
http://en.wikipedia.org/wiki/Duncan_Hunter
“So did Barbara Bush, who was probably the least photogenic First Lady ever, but she was very visible during campaigns.”
Before the Primaries, or after? The reason I ask is that I can not remember the wife of a candidate being out front on the campaign trail before the primaries in recent memory.