Six is a little young to be making her learn times tables, unless she's
really, really math-talented. Multiplication is more than just memorizing tables. But anyway, to teach times tables, they have to really grasp the concept of adding. They have to also grasp place value, such as 45: means 4 tens and 5 ones. Tell her that Multiplication is just adding a whole bunch of times. 3 x 5 is adding 5 three times, or adding 3 five times. Start out with a bunch of dried beans and a muffin tin or two, so that she has tactile experience along with visual. Start with the small ones (the 1 x , and the 2 x) , show her on paper, and then also with the beans, sorted into the cups. Show her how the sorting works, and she can figure out her own answers too.
Also tell her that any number times one is itself. Any number times 2 is like adding it twice (3 + 3). Any number times 3 is adding it 3 times.
She also has to understand commutative property of addition and multiplication (order doesn't matter. 3 x 4 is the same as 4 x 3). In math, the understanding of what you're doing is MORE important than memorizing the tables because once the kids has that down, then the memorizing goes quickly because they know what they're doing.
Good luck with your little girl!