|She still mixed up the letters.|
So at first we did fill in the blanks like putting a missing letter in each word. Then we tried mixing up words to rewrite them in its proper spelling.
As a finale, I asked her to make use of her colored pencils and other coloring materials to write each word in a clean bond paper to post on the wall. This way, she will always get a chance to glance at each word and to be more familiarized with the correct spelling of each.
We also used music. Here is a song I found in YouTube.