I guess Google's ToS is between the employee's husband and Google and not the employee, the employee's husband, and Google. So there is no authorization for some random employee to "check up" on their partner, even though it sounds like escalating internally should help. (It should at least trigger, "we'd better look into this very carefully", though. If it didn't, that sounds like a problem. If it did, and the result is "yeah, this is legit", that's a very awkward position for everyone.)

I was in a similar situation when I worked at Google. My brother kind of disappeared, and my family asked if we could at least check if he logged into Gmail. I asked and was told no, and I understood why -- it's up to my brother to share what he's up to, not Google. (My brother was fine; just didn't like replying to email or answering his phone.)

Oh certainly not "check up", but try to get a human to look at it and respond to the appeal with more than boilerplate.

This is different though, his husband can't get the records himself.