She can get reduced benefits as early as age 60 or full benefits at full retirement age. If she's 50 years old she could get the benefits if she's disabled and her disability started 7 years or earlier before your death.
what if she remarries after my death?
if she remarries after age 60, 50 if disabled, she would still qualify for the benefits on your social security records.
And if she receives a pension not covered by Social Security?