Just as they don't write their names in order at first, they don't need to know the alphabet in order right away, either. Hang an alphabet poster where it can be seen every day. Introduce her to consonant blends a little at a time. Kids grasp this concept quickly, and it aids them in making bigger words. Consonant blends are two letters together.
Examples are 'ch', 'sh', 'tr', 'ck', to list a few.
Remember to read to your child, too. If she sees you or an older sibling reading, she will want to read, also. And she will get curious about words. She will want you to point them out, and even try and read some of them herself. Go to the library often and look at books.