I have one student in particular who is really struggling with learning her alphabet letters this year. She came to school speaking broken English and has since learned a handful of sight words and a handful of alphabet letters. She has since stopped progressing. I use alphabet chants with puppets (the puppets are the exact same as the pictures on my word wall). I have done letter sorts, we read books where the students find the letter we are studying in the book. I also have her write the letter in sand, on a tracing mat, and on other more sensory materials. Her progress varies day by day. She speaks exclusively Spanish at home and seems to forget everything she learned when she goes home. What can I do to boost her knowledge of alphabet letters and sounds?