Hah, found what i was looking for.
DM Paperback p.7
I still kept trying to find a way to remove her affliction, but I'd received only a card and a postcard or three from her since she'd left.I conclude that he hasn't seen her.
Also, we know for a fact that he hasn't seen her between GP and SK
SK:
I read her syndicated column in the Arcane. She must have been mailing them in to her editor, so at least I knew she was alive. She'd asked me not to follow her and I hadn't.And if the conception had taken place between SK and DM, well... Susan would have been pregnant in DM.
Last possibility is that she was
when she left after GP. wich is highly unlikely.
I just don't think she could/would have kept that from him when she saw him in DM.