For the home school parents, if you home schooled K-12, what did your child need besides SAT/ACT scores to get into college?
I know several families that home school and all were in a educational Co-op but one. That one did everything on her own with her daughter and is having issues with proving what her daughter did, since she did not keep good records.
Well, technically, they don't need anything. There are schools that will accept students based on their standardized test scores and grades given by the parents alone.
If you're not part of a co-op, you can take community college classes, whether for high school credit or as the first part of college. The vast majority of four-year schools will accept community college classes. If that's not an option, you can take some sort of outside classes from a reputable source. There's online classes for everything these days. If even that's not an option, you keep really good records so you can show the colleges your kid's geometry final or their English essays or whatever, and you deal with the fact that that'll restrict your options somewhat. From what I've heard, liberal arts schools are the best at handling very non-standard applications like that.
I'm sure the rules on homeschooling in Florida are very different than the ones here (they vary heavily by state), so I can't really provide any other advice. Your acquaintance should probably find someone from Florida who's been through this before.