My best advice is to be there for her, make sure you make yourself available to her for support. I don't know if you live close to her but if you do volunteer to cook, clean watch kids or whatever else might help her. I have 5 sisters and all of them live too far away from me to help. I think it was harder on them than on me. Iam the baby of the family and they all wanted to be here to help but only two were able to come and stay for a few days. Let her be the decision maker on some of it, they wanted to go to chemo with me but I felt more comfortable going alone or with my husband. So ask her what she needs and she will be able to help you. Most of all just be there to listen.
Give her the information about this site too. We have alot of good information and lots of support for her too. When I was diagnosed this was a godsend to me.
Lots of hugs to both of you. Keep us posted we care.