I was just at the Family History Library in SLC for a few hours the other day and I could not find anything. I didn't have much time, though, so I will have to go another time.
I wonder if the belief that she was from Liechtenstein might come from someone in the family saying the family name might be from there (or something like that) which was just misreported down the generations. The name Whisnant is supposedly from Switzerland, but Switzerland does border Liechtenstein. Who knows.
Have you seen Lusissis' photo? She does have a more regal look than my other down-trodden southern relatives of the period. In one picture she has a lot of jewelry on, so that could be where the part of the story comes from that she had a lot of family jewelery that she sold to support herself. She did appear to live with other relatives after Jasper's death.