This sounds like a Laxius Power I question, unless I am just horribly off base. My memory of this game is pretty much shot, and I can't locate the main walkthrough I used back then.
Is there any chance Wendala is still back in her cell waiting, or did she actually follow you out? When it says to "return", it may be referring to her cell rather than to Charly. Past that, advancing the plot to Sankt Leona may lock you out from completing certain quests. I vaguely recall there being issues of that sort.
Your best bet may be the Laxius Power shrine at:
http://laxiuspower-shrine.goodforum.net/-That's the most active community based around Indy's older freeware games that I am aware of, since the official one went kaput. There may be a few members here that know their LP history better than I do as well.