Trust Baba. It is very difficult, but have to have patience. sometimes it takes long for the reasons not known to us, but there is end of every suffering and pain. Nature of human life is joy and peace, what we live is not our real life, it is only like playing a role allotted in the mortal world according to our karma or destiny.
If possible, read Hanuman Chalisa daily and visit any near by holy place, temple/gurudwara etc even for 5 minutes daily. Donate some food in the memory of your or your husband's grand father. Try to be positive even it is tough.
May Baba Sai Bless you and your family.
om sri sai ram !