gary1957 said:
she keeps her own $1,350 AND she gets a big chunk of yours on top
Let me answer the core question first, plainly, because it is the one that matters most: your wife does not keep both checks. When one spouse in a couple dies, Social Security pays the survivor the larger of the two benefits, not the sum. So in your case she would move up from her own roughly $1,350 to a survivor benefit based on your roughly $2,900, and her own smaller check stops. She ends up on ONE check, the bigger one. Patty had it right and the "widow's portion added on top" idea, though it is extremely common, is not how it works.
Now the conditions that decide the actual number, because "up to 100 percent of the deceased's benefit" hides a lot of detail.
First, the survivor benefit is built on what you were actually receiving, delayed retirement credits and all. Between full retirement age and 70, benefits grow about 8 percent for each year you wait, so a benefit could have been roughly 24 to 32 percent higher at 70 than at a full retirement age of 66 or 67. You claimed at 66. That means her survivor benefit is anchored to your actual figure, not to the larger number it could have been. This is the honest answer to your guilt question: claiming earlier did modestly lower the survivor amount she would eventually step up to. But weigh it against the seven years of your own checks you have already banked, which gary1957 is right to point out. It is a real tradeoff, not a pure error, and for many households claiming at full retirement age is entirely defensible.
Second, when SHE claims a survivor benefit matters. A survivor benefit taken at the survivor's own full retirement age pays the full amount. Taken earlier it is reduced, down to about 71.5 percent if claimed as early as age 60. Your wife is already 66, so if that day comes she is at or very near the point where reductions no longer apply, which is good news.
Third, and this answers patty-rn's question about whether she should be claiming her own benefit now: because she has her own record and yours, she sometimes has room to take one benefit while letting the other grow, then switch. The strategy depends on the exact numbers on both statements, and it is genuinely worth an hour with someone who can model it rather than a rule of thumb. While you are both alive, by the way, a spousal benefit tops a lower earner up to as much as 50 percent of the higher earner's primary insurance amount, so it is possible she is leaving a little on the table right now even before survivor benefits enter the picture. That is the kind of thing the site's guide to spousal and survivor benefits lays out, and the mechanics of the underlying claiming decision sit behind all of it.
A few exceptions worth naming so they do not blindside her later. If she were to remarry before age 60 she would generally forfeit the survivor benefit on your record; remarrying at 60 or later, she keeps it. Because she is already past full retirement age and still working part time, the earnings test does not touch her, that reduction only applies before full retirement age. And if she had ever earned a government pension from work not covered by Social Security, you can now set aside the old Government Pension Offset worry: the Social Security Fairness Act signed in early 2025 repealed both that offset and the Windfall Elimination Provision, so those benefits are no longer clawed back the way they were for decades.
I will not tell you what the two of you should do next, because the right move turns on the precise numbers on both of your statements and your health, which I cannot see. Take the two statements to a fiduciary advisor or run them through the calculators at SSA.gov. But the thing you were most afraid of, her being left with almost nothing, is not what the rules produce here. She steps onto your larger check, not off a cliff.