see if the system lets you remove the death date on the one marked as deceased.
Here is an article from the HELP CENTER ( a great resource for questions like this)
The Help Center: https://www.familysearch.org/help/helpcenter/search?
I don’t think FSFT allows us to merge living people
it does if they are both on the same account - which would be the only ones you could see.
in other words if you have two living people on your acocunt - you can merge them.
but in this case it is the deceased record that is the issue
and this deceased record once it is marked as living - will then - disappear from public view.
so in a round about way you are kind of right - in the end she wont merge them - but the deceased one will disappear.
When the person is very much alive, only you should be able to see them. So, if you have found a living person with a record that says they are deceased, here is an article that will help:
I had this happen with some of my family members who were alive. I didn't create the records and couldn't change the status to deceased. But, FamilySearch did.
But only by using the "Merge by ID" function