Ssuanna Lytle baptized 28 Mar 1758 [family gives her birth year as 1753, but this was probably changed by herself so she would not be sent back home to her parents. She needed to be of legal age when she entered America with her husband and so she added 5 years to her age making her a legal adult when she hit the shore. Since her husb. had to kidnap her from her family to take her to America, the date change makes some sense.) dau. of Dinzel and Jane Lytle.
Also, the registers gives the parents of Dinzel and his baptism: Thomas and Ann Little as parents and his baptism as 20 Jan 1729.
the records would appear to indicate that she was born in Cornwall, not Ireland or Scotland, and that her parents may have been (one or both) English rather than Scots. The family estates are said to have been on the border of Scotland and England, making it unlikely (though not impossible) that her parents were Scots. I have not looked at the LDS film, but using the number you can probably order it up and see if it helps you in your search.