I’m not sure that other college prep level courses would be any better. You can certainly get less information/material in a course–but that’d be shooting yourself in the foot if she wants college. She can work and struggle now, with you to help and support her and the time to be more flexible—OR she can take an easier road and feel this way, times ten, when she hits her first lab science course freshman year. And you won’t be there. And the teacher won’t be terribly interested in why she needs to take more time.
I think you’d be better off moving slowly, but getting the material down. This is an excellent time to really focus on reading for information vs. reading for pleasure. On prereading, fast reading, reading for detail. On how to identify main ideas. How to memorize dozens of vocabulary words. How to really, really take notes and then, how to use them once you have taken them. How to prepare for a test and how to take one. Do you remember this yourself, or do you need a book recommendation for her?
You’d be better off taking two years and understanding biology, how to study, and how to learn in information-dense courses, and only getting in one or two lab sciences, than to emerge with several but very superficial courses.
Do consider taking time to add in material that can help her understand concepts and retain information. She isn’t doing that. She needs to learn how. It may be you need to back up and cover earlier modules better, too. It’d be better to do that at home than at the student help center at college while she’s taking 15 hours. IF videos help her, use them. If she needs to make up silly stories, do it. If she needs to set her vocab words to music–do it.
Some sources to use to help:
Khan Academy
There’s another one on DVD that I can’t find right now and I have to run. I’ll try to find the site and title.
I have a very unpopular opinion here and I wouldn’t be surprised if you hear 100 ways I’m wrong and decide not to listen to me. I”m used to it. But I”ve also sent kids to college and counseled kids at college and I hate like anything to see kids realize they are in over their heads and drop out and have trouble and be miserable. It’s Do Hard Things time. It can be hard now or harder later.