Thanks, everyone, for your input. As noted above in my reply to Lynda, it appears -- per several answers/comments above -- that the PM may have been laboring under a misapprehension about needing to be pre-1700 certified before she could add me to the TL. I assumed she had actually tried to add me, and couldn't; that's why I posted the question.
As of last night she orphaned the profile, I adopted it, she automatically remained on the TL, so it's all been taken care of.