Volunteer tutor needed: biology for a motivated student in Tema

My younger sister, Mabel, is 17 and in the final year of school. Mabel loves school but biology has been a struggle since the school was closed during the move. The SAT exam is in November. We can't afford a private tutor, and the school's free sessions are full. We're looking for a volunteer who could spend an hour or two a week, in person in Tema or online, for about sixteen weeks. Mabel is polite, hardworking and eager. We have a quiet space and a laptop for online sessions. I'll always be at home for in-person sessions. If you're a teacher, student or professional who feels comfortable in biology, you could change the course of Mabel's year. I never thought I'd be the one asking, and I'm grateful for every bit of support.