What is possible? 2k training and goal for developing high school athlete?

A young family member has fallen in love with crew after 2 seasons on her high school team. She would like to row openweight in college and has very realistic expectations- she wants the student/athlete experience, not the Olympic training experience. (She is a 1500+ SAT type)

Her first 2 k was 8:30. It’s now 8:10. I have no idea if she is well coached on this.

What’s a realistic plan to get this down, and what is a realistic timing arc by the Fall 2027? I assume she can get below 8:00 but no sense of what a realistic goal is.

Thanks in advance for wisdom shared.