I think you could use any book. Let her read to you and/or let her read even paragraphs to herself and you read along with her (to yourself) and then ask lots of questions.
You could even ask her what she just read and you might prompt her with questions. Details are great but guess what? Lots of times when you have comprehension problems you miss main ideas/main characters etc. while focusing on small, less important details even.
You can even practice with her by taking a coloring book picture (with no colors on it)and asking her to her to tell you about the picture.
I know this sounds silly but trust me...lots of times they'll tell you all kinds of details about the picture (ie. He has a beach ball, he has a surfboard, he is wearing flip flops and a bathing suit) but they will not tell you there is a boy in the picture or it is Mickey Mouse in the picture etc.)
When they skip details like this, they also skip it in stories, paragraphs and even sentences. They need to be able to tell you the main idea of a story or be able to tell you a good title of the story. Do you remember having to do that on tests and things? I do and it was always the hardest question...mainly because I had trouble with comprehension.
Often they are great readers and good listeners. If you read it to her, it might be a lot easier for her to answer the questions etc. It happens when you read it yourself, imho--you often do not "see the movie in your head." And THAT is important!
You might read the words for what they are--house, grass, barn, blue sky, cow, farmer but as you are reading you need to see what you are reading--"see the movie in your head." It is the difference between reading the words and reading them and seeing the whole thought. For some reason, IMHO, it is easier to see that movie as someone else is reading the story to you.
You know how people read a book, see the movie at the theater and then say, "That's not how I had that pictured at all? I would not have chosen ___ (actor) for that role?"
Well, I never did that or said that until I got help for my comprehension trouble.
Help her now as much as you can because as a 1st grader she is learning to read but as a 3rd grader she starts reading to learn. Big difference and it will help her all through school if she enjoys reading, comprehends, and can answer because of all this.
A teacher may have better info but this is what helped me. I was 40 years old when we discovered the reason I disliked reading was because of my comprehension issues. It wasn't fun at all for me to read--it was a lot of work. Now, I love to read. I have had teachers tell me that comprehension is the #1 missed literacy problem.
Good luck.

So this is so long and I hope it makes a bit of sense. It is something I am very passionate about. I feel I was robbed of a huge world out there--the World of Books and stories.
