On the second try, she received the correct part, was able to complete the repair, and was proud of herself for the accomplishment.
Parts are cheap.
Cost of labor and service call is expensive. You do not have to stay home and wait for the serviceman to arrive. You will achieve personal satisfaction by completing the task yourself. Tackling the job yourself promotes your ability to task risks that may carry over into other facets of your life. Enjoy new accomplishments and encourage others to keep taking risks.