[where's_the_Outrage?]

That's not my understanding, she has to wait until she's 60:

When a married person dies while receiving Social Security retirement benefits, the surviving spouse is eligible for survivors benefits if he or she satisfies certain conditions. The most common qualifications are as follows:

The surviving spouse must be at least 60 years old

[TexasGator]

ssa.gov

When a worker files for retirement benefits, the worker’s spouse may be eligible for a benefit based on the worker’s earnings. Another requirement is that the spouse must be at least age 62 or have a qualifying child in her/his care. By a qualifying child, we mean a child who is under age 16 or who receives Social Security disability benefits.