Hello SuseyQ,
I'm thinking that your daughter is experiencing phonological awareness difficulties. You say that she's working at a second or third grade level, and she's of grade six age. In my experience, students who are making less-than-expected progress with the reading of words, are unable to figure out how words work. Words seem like random jumbles of letters to them, and they can't use sounds to help figure them out. This means that they have to memorize words one at a time. This also means that they don't see patterns in words. For instance, they don't notice that the "ab" spelling (which always says /ab/ in English syllables) is found in short, medium, and long words, e.g. nab, cabin, laboratory. If they can't see and use patterns, then English words don't make sense to them.
I'd like to recommend that you take a look at my website:
www.dynamicreadingandwriting.com for an in-depth discussion about how this difficulty can impact children's progress with reading, writing, and spelling. I'd also suggest that you consider the book I've written: Why Your Child Can't Read And Spell And What YOU Can Do About It'. I've designed 48 easy-to-follow lessons to develop reading and spelling, from one-syllable words through to the hardest multi-syllabic words in English.
You'll want to see if you can accelerate your daughter's reading level to closer to grade expectations, and by developing her phonological awareness (her awareness of how to use sounds to figure out words) you will enable her to learn words more quickly.
For comprehension and writing work, I would suggest that you look for materials that develop main idea reading and writing. Also look for materials on finding and using details, sequencing, comparing, predicting, and inferring. Perhaps your daughter's school can help you find these. It's important that you work with your daughter at her instructional level, i.e. the level at which she reads comfortably (around the 90% word accuracy level). As you develop her phonological awareness, you'll find that her word reading levels will increase much more rapidly, and she'll move closer to age/grade expectations and materials.
Sincerely,
Sylvia HS
Reading Specialist, Author