I know I probaly have the wrong resources,but I think I know what happened to lieserl.

I just came upon this subject and it obsessive to me. Personally, considering Albert's attitude towards his first wife, whatever happened to Lieserl he blamed her. Maybe the reason he treated her so badly and than did not approve of his son's wife was because of what happened to Lieserl.
But let me know what you think happened to the girl. The resources online are very limited.