If she is a fluent reader, but not understanding the text anyway, then try something I call intensive questioning. Have her read the first sentence of a text… and before allowing her to read any more, ask her a ton of questions;
Sentence 1: “We got back from the grocery store and found the house a mess.”
1. Where were they?
2. What do you think they were doing?
3. Then what happened?
4. What did they find?
5. Do you think they were surprised? Why?
6. Where were they first? And, then where were they?
Then she reads a second sentence.
Sentence 2: “I had neglected to close the bathroom door again, and our Saint Bernard, Bernie, had left chewed toilet paper all over the house.”
1. Who had caused the mess?
2. What allowed him to cause the mess?
3. What did he make the mess with?
4. How did he get the paper?
5. What kind of paper was it?
6. What was the Saint Bernard’s name?
7. What kind of a dog was Bernie?
8. What did Bernie do to the toilet paper?
9. What was the person who is telling this doing while Bernie was making the mess?
Etc. As she gets better with that, start stretching her out to read longer segments, but still with this thoroughness of attention to meaning. (You can also turn this around getting her to generate the questions about the sentences—then trying to answer her own questions). The idea is to keep her so focused on the meaning that you break the habit of simply calling the words.