When experiencing grief, there is sometimes just nothing you CAN do but be there for the person. Having experienced grief myself, I didn't want to talk with anyone when it happened about it for awhile. I still hate talking about it. Grief is a very private thing, everyone greives differently. All you can do, honestly, is be there for her.

((hugs)) & many thoughts going to your mom at this time. I am so sorry for your losses.