I have an employee who was out on extended Sick Leave from Dec 18, 2017 – April 11, 2018. Is a midpoint required to be completed for the Oct 1, 2017 – Mar 31, 2018 timeframe even though she was in the office for less than 3 month?

The employee can receive a mid-point at the natural half-way mark, i.e. ~Early July.