Seneca 10th grader summer @ Harvard

Hello. My name is Emily Douglas. I am in the 10th grade at Seneca High school. While looking for summer programs, I came across one for Harvard University secondary school program. This program consists of 7 weeks, living in the dorms and meals in the freshman dining hall, 2 college classes with college students, trips to other Ivy League schools, and emergence into a college community. I applied! I had to have recommendations from my school, transcripts, and a difficult question/essay portion that I had to complete. About 2 weeks later I got the news that I was accepted! I was so excited! Now we are dealing with the financial aspect of this. I received a scholarship from Harvard for $7000, however I am still $5000 short to go. My mom is a single parent with 3 of us. All of the scholarship searches that I have done are only for 11th and 12th graders. I am not sure what else to do, so I am reaching out to the community for help. If there is any way for a sponsorship or donation it would be greatly appreciated. I am wanting to be a history major and I am already researching colleges. This would be a wonderful opportunity for me. 
Thank you for your time and support,
Emily Douglas