I agree with what's been shared already! Dictation is the best 5-10 minutes instruction in spelling we've found with all of our sons, whether they are natural spellers or not. With our son who struggled more with spelling, we did dictation every day of the week, rather than just 3 times a week. We also talked through how to study for each passage. As a now 12th grader, he rarely misspells things within his own writing. However, I credit not just dictation, but also the editing process HOD includes within the Appendix of each guide. We apply these concepts to all his writing, and before I meet with him to correct his work, he goes through the steps himself. The guidelines outlined in the daily plans for writing written narrations have also been my 'friend' in helping him to write and then to edit with the best spelling possible with more and more accuracy as he moves through the guides.
Dictation in HOD follows a systematic approach from Levels 2-8, and spelling is not intended to be an inspirational subject. Rather, it is a disciplinary subject, with a set procedure and a well thought-out path from start to finish. There are plenty of creative, inspirational subjects within HOD (far more than were at my disposal when I was in public school and was your little gal's age), and these are subjects your daughter will certainly enjoy expressing her personal thoughts, creativity, and interests! But, when it comes to spelling, it's just not going to be an outlet for that type of learning. So, perhaps an explanation of disciplinary and inspirational subjects with your dd would be helpful. A rotation of disciplinary and inspirational subjects (which Charlotte Mason advocated) really helped one of my sons, who tends to especially love creative assignments. Here is a link to a past post in regard to this that may help as you set up the routine of your dd's day (and it may help your discussion with her about this topic as well)...
Rotating Inspirational and Disciplinary subjects:
viewtopic.php?f=6&t=2125
However, I do want to reiterate the importance of the editing process HOD advocates in the Student Tips/Teacher Tips within the appendixes of each of the upper guides. Following the steps consistently each day, as soon as possible after the writing has been completed, was the other piece that helped my son become a good speller consistently. So, if she doesn't have her own copy of her student list for editing her work, I'd make her one and have her begin working her way through it each written narration/writing assignment. I'd also follow the 'spelling' steps as indicated in the teacher's list, starting with the one for the poorest spellers and moving towards the one for better spellers. This will help your daughter have the habit of first writing with the best spelling possible (as correcting many spelling errors is time consuming) and have the habit second of editing as carefully as possible, with use of the helps at hand (i.e. your assistance, writing to see what 'looks right,' the dictionary, the primary resource of reading used, etc.). This attention to detail will become her new habit, and soon, she'll be making fewer and fewer mistakes knowing she has the dual tools to spell words and edit misspelled words well herself. I hope this helps!!! Keep up the good work with her, and she will definitely come along - I've seen it in all 3 of our children given time and consistency!
In Christ,
Julie