Learn to compromise and work with each other's schedules and preferences. If you really enjoy getting together on the weekends but your mother-in-law can only get together during the weekdays, then settle on some Friday evening plans. If she is busy for the Summer but you can't take time off to go on a trip in the Fall, instead plan on a Spring family holiday. Always keep perspective and try to be flexible. Chances are she will notice and be sure to do the same back.