Complex sentence: Accurate numbers of figures are hard to come by as the interpretation of what is and is not a sheela na gig will vary from writer to writer, for example Freitag omits the Rochester figure from her list while Weir and Jerman include it.
Split into simpler sentences: Accurate numbers of figures are difficult to reach, as the interpretation of what is a sheela na gig will vary among scholars. For example, Freitag omits the Rochester figure from her list while Weir and Jerman include it.