Okay, oddly enough her ssh key (which seems totally valid and works for other repos and for which she had authorized) didn't work. She did change the email address in the pub key half, but that seems irrelevant. The authorizations were the same on both ssh keys. Really baffling. Thanks for your patience with us!
Bug 1923189 Comment 6 Edit History
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Okay, oddly enough her ssh key (which seems totally valid and works for other repos and for which she had authorized) didn't work but with a new ssh key it worked fine. She did change the email address in the pub key half, but that seems irrelevant. The authorizations were the same on both ssh keys. Really baffling. Thanks for your patience with us!