Welcome to the forums.
It must be hard for both of you!
You say she recognises most of the alphabet. Take this further, and teach her the full alphabet phonetically till she has the sounds of the alphabet firmly fixed against the shape of the letters. Make sure you teach it in the order of the alphabet as it is a tool for later.
Then take the simple combinations - an on at - and do the same. Then start to add consonants - can cat man mat.
Do you read to her at bedtime? You can make a point of pronouncing simple words clearly while pointing to each letter as you say it.
Don't worry too much; it will come to her with practice.