If her last name at birth was Johnston, then she needs to have that changed from Lambert. Any of the current three co-managers, or the other person on the trusted list, can make this change.
I agree it makes no sense for her, as the daughter of Johnston, to be named Lambert.
She should be Marjorie Johnston aka Hume. I'm pretty sure her cln was still Johnston, even though married.
There is also a comment on the profile from 2016, the concerns expressed therein seemingly never having been addressed.