L.M.
Kids learn by repetition so if you're telling her what the word is, you're actually helping her.
She should have a list of the 100 sight words. By age 7 she should know those. Build upon those by using the word families. For example: if she knows "it" add a "k", ask her what sound does "K" make k+it=kit.
Read to her. Point to each word as you read.
Read the same book over and over. Read it to her once or twice each day for 3 or 4 days. On day 5 read it together. She reads a sentence, you read a sentence. By the end of the week she should be able to read it herself.
Have her read with someone other than you - dad, older sibling or cousin, grandparents
Good luck.