OK, having thought it over, all I really want is for Frank to be able to do something like make a private (unhackable) post after she gets there saying that something seems off about her. Other than that, he'd be his usual self and say hello and all that, and talk to her -- though maybe not thread with her but I doubt an old man is going to interest her much anyway. (He wouldn't be the one to give up secrets but once the plot against Niflheim is over he probably isn't going to have any.)
Will that be OK for you? If not, I can just not do it.