I am currently searching Custer records and have lots of questions about Elizabeth "Libbie" Custer. To the best of my knowledge, Libbie's 3 sisters and mother died before Libbie turned 13. There doesn't seem to be much information available on her childhood and I'm hoping my visit to the archives will answer some questions I have. Libbie met Custer when he was living with his sister & brother-in-law in Monroe and they were later married in the 1st Presbyterian Church. Hopefully I will be visiting the Monroe County Historical Museum in the Spring to see what I can learn. I made notes of your inquiry.
Cheers!