You have made this comment two different ways, and other conflicting info:

"there is an extra $1,000 allowed because her husband is over 55"

"The $1K is her make up."

Who exactly is the Old person? If that is Him, you cannot put that into Her HSA. He would need his own account. And for her to put anything into his account, her policy needs to be Family coverage.

But now, you also stated he has a different coverage. So, he doesn't qualify for HSA, because he is covered by other insurance, additionally to her family plan. Or, if he specifically is not covered under Her plan (such as, she has herself and kids on her Family plan), then he isn't qualified under her plan, she can't put into his account, and he can't put into his account for having a non-HDHP coverage.

You can use web resources, such as:

https://www.wageworks.com/takecare-myhsa/health-savings-account-faqs/