Final answer:
Heidi's ability to lead and guide her team, combined with her dependability, suggests she is a Team Leader, which requires motivation, team interaction skills, and technical expertise.
Step-by-step explanation:
Based on the characteristics described for Heidi, such as her ability to lead and guide team members in new and challenging situations, along with being dependable and authoritative, it would indicate that Heidi holds the position of a Team Leader within her team of web technologists. A Team Leader in this context is someone responsible for guiding a team, making sure that the team works collaboratively and effectively, and ensuring that project goals are met. This role requires a self-motivated, success-oriented individual with the will to deliver against goals, strong team interaction abilities, and strong technical skills, which align well with Heidi's described capabilities.