I'm sorry, Ashley, but your information is partially misleading, and partially incorrect.
While it is true that a financially emancipated student is classified as an independent for federal financial aid purposes, the process of gaining that emancipation is very complex. A minor seeking "financial emancipation" must file a petition in an appropriate US court of law, and a judge must examine evidence to determine whether that minor is, in fact, completely and totally financially independent of his/her natural parents. If the judge finds that the evidence is sufficiently convincing, he/she will issue a court order that declares the applicant a financially emancipated minor.
Unless the person who asked this question wants to go down to court and pay all the required fees, then gather documents and attend a hearing, the idea of claiming financial emancipation is quite a bit more complicated than you made it sound.
With regard to your remarks about legal guardians - that part of your answer is incorrect. A legal guardian does not qualify as a parent for FAFSA purposes, and an applicant may not use a legal guardian's financial information in completing the FAFSA.
The only "substitute" for a natural parent is an adoptive parent. You can only use another person's financial information if they have legally adopted you. There is a significant legal distinction between guardianship and adoption - one is not a substitute for the other.
It's important that this information be corrected, for the benefit of the questioner, and any other curious students who read the responses to this question. Otherwise, I hope I have not embarrassed or insulted you, in any way.
Good luck to both of you! I hope this helped.
Your best bet is to go to your Legal Aid office. Lawyers can't make a living if they sit at a website all day and dole out free legal advice.