I know people who love TouchMath but it's not effective for some children and I personally found it confusing. I am one of those people who still have to think twice about 8 x 7.

I once had a student with severe math LD who took a year to gain automaticity on 1 + 1 = 2. It was a cognitive breakthrough when it happened. It might take time but I would not give up on remediation at this point and it doesn't have to be torturous for your DD if you find the right teacher/therapist.