Dear Liz: A family member recently lost her spouse. His monthly Social Security check was $1,800 and hers is $750. I have two questions.

First, is my understanding correct that she is able to begin collecting his monthly amount instead of her own?

Second, instead of collecting Social Security based on her earnings history, was she eligible instead to have collected 50% of her husband’s monthly benefit? If so, she was entitled to $150 more than she’s been collecting. If this is accurate, is there any recourse for collecting the additional benefit from Social Security?

Answer: To answer your first question, yes, your relative will now receive a survivor’s benefit equal to what her husband was receiving. She will no longer receive her own benefit.

The answer to your second question is a bit more complicated. Your relative may have started benefits before her own full retirement age, which used to be 65 and is now 66. When people start benefits early, they receive a permanently reduced amount whether they’re receiving their own retirement benefit or a benefit based on a spouse’s earnings. It’s possible that her reduced retirement benefit was more than her reduced spousal benefit.

Another possibility is that she started benefits before her husband. To get spousal benefits, the primary earner typically needs to be receiving his or her own benefit. (There used to be a way around this, called “file and suspend,” that allowed the primary earner to file for benefits and then suspend the application. That no longer exists.)

If your relative started benefits before her husband, she may have been able to get a bump in her check once he applied, assuming her spousal benefit was worth more than her own retirement benefit. That bump in benefits is now automatic, but if she turned 62 before 2016, she would have had to apply to get the increase, says Mary Beth Franklin, a Social Security expert who writes for Investment News.

She wouldn’t be eligible to get all the missed benefits back at this point, but she could get up to six months’ worth.