I'm perplexed by my 4th great aunt's probate case. She had no known children. Named all but one of her brother/sister's children and/or grandchildren as heirs to her estate. She also names another sister, a Mrs. Heacker (sometimes referred to as Sallie Heacker) that I wasn't aware of and is firmly placed, along with her descendants, in another line in other family trees. What really makes this even more perplexing is that Mrs. Heacker goes by Armilda on every other record and my 4th great aunt was named Armilda as well. The name Armilda or Millie is is on about every branch in every generation in both 'the other Armilda's' lines and my 4th great aunt Armilda's siblings lines.
Would someone refer to someone who was not a sister as a sister? My Armilda was born in 1823 and the other Armilda was born in 1837, so there are quite a few years between them.
I can give quite a few more details, but I'll leave that for the comments with any questions you may have with specifics. There's also a little more desperation in my quest here: http://geneabug.tumblr.com/post/27520030319/being-stuck-is-the-worst