Part Time Assistant Needed. Easy Job.

Looking for a responsible assistant for 10 hours per week for next 3 months. The only task is writing observations-notes (1-2 pages) about my (mom's) parenting skills during each of her visiting my 9 years old son (at the park or at her home). Because I am divorced and dad of out child claimed that he wants to be the primary custodian for our son, I am also applying for increasing my custody time-share with my son in Family Court. The observations-notes are needed for my proof of her good job keeping my son safe and happy. Easy job, but you always need to be on time and write down the main observations.