Six weeks is a long time. This means that buyers who see it on the web are not bugging their agents to show it to them, so perhaps there's something in the photos or the comments that isn't targeting the likely buyer for the house.
Do the comments truly represent the home properly? Sometimes, sellers are resistant to having their agents tell it the way it is. I say, if the house is small, tell people - they may be looking for a small house! It's immaculate, but has it been recently remodeled and updated, or is there some potential for future upgrades there? (See, I targeted people looking for a house that wasn't perfect, that they could put their own stamp on with that one. Clever, no?)
Does it have a large, level lot? That's great gardening space. Small lot, that's one that's low maintenance. Does it get good natural light? Then say so!
Is it photogenic? Could it help to bring in a stager, a decorator, somebody to make it look better in photos? Are the photos any good? (By which we mean, did we use a professional photographer?)
Finally. Has the agent talked to the other agents who have competing listings? How's their traffic? When it's bad, we commiserate together; but if someone's getting two showings a week and your daughter isn't . . .