The spelling of the word "Walteena" can be explained using the International Phonetic Alphabet (IPA). The first syllable, "Wal," is pronounced as /wɑl/, with a long "a" sound followed by the "l" consonant. The second syllable, "tee," is pronounced as /tiː/, with a long "e" sound and the "t" consonant. The final syllable, "na," is pronounced as /nɑ/, with a long "a" sound followed by the "n" consonant. Therefore, the correct spelling of this word is "Walteena."