Did you ascertain that she was definitely a female? If so, it’s possible she is having babies somewhere. They usually do disappear at that time. When hubby lifted the house, was there a nest built inside? I suppose it’s possible she has babies in that house, so you need to be very careful not to disturb it now, in case. But she may just have been staying there short term and have a nest elsewhere.
There are numerous other reasons why they might ‘go missing’, and many people have been experiencing that ‘problem’ this year. I would keep leaving the food out, because if she has had babies it will be useful for her to know where she can get food relatively easily.
