OP, if your daughter is having trouble spelling simple one syllable words with vowel teams (words like meat, floor, spoil, please, flew) - I recommend you get this workbook and work together with her to do the activities.
https://shop.sharpen.com/?_gl=1*7a2ujk*_gcl_au*MTA1Mzk5MjU3MS4xNzMyNjc0Mzg4*_ga*MTkwMjg4NTQ0LjE3MjkxMTUyMzQ.*_ga_FZVEBN77BS*MTczMjY3NDM4OC4xLjAuMTczMjY3NDM4OS41OS4wLjA.
Level B1 would be the level to work on the types of words I listed. If she has tthose spellings mastered, but needs work with words like ledge, piece, sketch. workbook B2 would be appropriate.
Both workbooks organize spelling lists by sound. The sound of /long o/ can be spelled oa, o-e, oe, ough, ow, oa. There are many activities to help master the spellings of different words. There are also sentences to read. I always have the students read the sentences, and then I have them write the sentences to my dictation. My goal is 10 sentences in 10 minutes. By the end of the workbook, they have covered 12 sounds, and written 120 sentences to dictation. They are usually quite proficient at writing by that point, because now they can actually spell any word that they can say! Maybe they don't quite spell all the words correctly, but at least the spell them in a phonetically sensible way.