I did the same thing. Married for 20 years, hubbie is French and came over for job last January. Kids and I (American) came over this summer (July). We finally went to the local town hall office in October, ready to tell them I had been in France, etc. since the tourist time-limit was over, but they didn't blink an eye. Gave us some forms to fill out, had to show them birth certificates and marriage certificate, and get some photos taken at the local photo booth at the COOP, and that was it. Got the Permit B about 6 weeks later. The town hall sent us a postcard saying they were ready to be picked up. It was so easy it was almost unsettling!
HTH and good luck!