There are a lot of different test that can be given to children and then tell us very different kinds of information about the child. Some test help pinpoint how children learn or try to measure their potential to learn, and those are the test used to id giftedness and LDs. Other tests tell us what the child has learned so far, that those are the ones that tell us things like grade levels and how the child compares with other in the state who took that test last year.
The tests your DD were given fall into the second category. They just tell you where she is right now. You would need completely different tests to find out if she is gifted or has an LD.
Your DD is a very strong reader (good for her!). Does she read for pleasure? How many hours a week does she read? I think that for kids who get a bug for reading, they quickly reach a point where they can read pretty much anything.
Your DD is average for math. Completely average. When you say she "struggles," what do you mean? She is exactly where she is expected to be based on her age and education.
To find out if your DD is gifted, she would need an IQ test. An IQ of 100 is average, and an IQ over 130 is considered "gifted."
To find out if your DD has an LD related to math, she would need to be given specific test for specific LDs by someone highly qualified to figure such things out. Part of it would be finding out her IQ and seeing if her ability in math lined up with her intelligence.
But if she only ever has to do the math she HAS to do, and reads quite a bit, the achievement gap could be explained by amount of time spent practicing rather than her innate ability.
I think it is very normal for people to find one of these subjects easier and more pleasant than the other. My Dh and younger DD are math people. They think it is fun. My older DD and I are happiest in bookstores, and prefer calculators to the "joy" of mental math.
So, depending on what you mean by she "struggles" with math, it may not mean a thing. If you just mean that she has to work at it and then doesn't get it all perfect and she doesn't like that, then there's nothing wrong with her. That's normal!
A true LD for math looks different than that -- kids who really cannot grasp spacial things, so all of geometry is lost on them. Kids who cannot think abstractly, so the idea of "2 + x = 5" is impossible because X is a letter, not a number.