Have her back. Anticipate (knowing her as you do) what might be an additional (therefore UNwelcomed) stressor for her at this time. As an example, if I lost/was losing a parent, Coach would be helping me mightly by intercepting the bills and paying them on his own; doing a good house cleaning without needing my assistance once a week; getting the littlest one to her events/school without consulting me about times, places, particulars; grocery shopping and cooking without expecting a purple heart...doing what I normally do but what really takes some effort and more energy than is available, all things considered. These kinds of things represent responsibility to her family at a time that her energy needs to be with her FOO. In other words, free her up to take her role as daughter W/O worrying that her responsibilities as mother will go unmet. Have her back. (Do it all without drawing an ounce of attention - do it quietly)
Good idea going to see your MIL. I would love that. It says that you are in this WITH her.
Me45 H46 T25 M22 S21 & 19 D13 Separated and filed 8/08 Moved home 11/08