title/prefix?

Peterson, Kathie Mae

after the name Elizabeth M... it says (aka Sister Mary H....) Is Sister Mary a prefix?

Melissa S Himes

It is always better to share the batch code and/or link to get an accurate answer. When you click on Help and Share Batch you will see the instructions on sharing. The batch code is the letters/numbers in brackets that follow the title of the project at the top of your screen.

Anyway - it sounds like Sister Mary is a nun. Sister is a prefix, Mary is a given name. Here is a link to a help article on how to index Catholic clergy members names since they can be complicated:

https://www.familysearch.org/help/helpcenter/article/how-do-i-index-the-names-of-catholic-nuns-and-fathers