Can you send me the save file with the issue to Naughty-Netherpunch@web.de please? Then I can check what exactly you're missing for the events with Mike. Since that is the only requirement you can be missing a step.
What`s the problem? Can you not find her? Did her dialog not advance the quest? Did you try to speak with Filauria after Seldana? Was the quest falsely advanced a step and you still have to do the step before the one where you have to speak with Seldanna?
