I'm estimating Lillian's rate at $25/hour based on her extensive experience as a domestic engineer, which is an unpaid or low-paid role. Her skills in Microsoft Office applications and customer service are valuable, but the rate is likely to be low due to the nature of her work. In the United States, domestic engineers are often family members or caregivers who do not receive a salary for their work. As a result, her rate is likely to be on the lower end of the scale.