I think it's very difficult to teach academics to young kids. A lot of people use things like letters and numbers as a measure of a child's intelligence, but they are not. I know it is frustrating to sit and teach her every day and feel like other kids are doing things she cannot.
Has it occurred to you that her brain is still developing, and may be working in other areas right now? A lot of kids are early talkers, others are early walkers. Some potty train early, some sleep through the night early, others are the opposite. Some know their letters and numbers before kindergarten, others enter kindergarten without much of a clue. The vast majority of teachers don't care about any of this. What they want is a child who can socialize well, sit in a circle and focus, and separate from Mommy and Daddy to get through the day. It sounds like your daughter can do those things. So she's working and learning and growing every day.
She may not want to sit and repeat what you say, she may not be focusing because it's not where her head is at. She may not want to be quizzed all the time. She may be taking it in but not yet be ready to repeat it.
Instead, just expose her to a variety of experiences - visual, auditory, tactile, kinesthetic. Get out of the home "classroom" and into other environments. Go on a nature walk, pick up leaves of interesting shapes, trace them onto paper. Go to the children's museum and let her get into some of the exhibits with her hands, touching shapes and surfaces. Go to the aquarium and let her watch the fish and explore the colors and the ways in which they move.
You can OCCASIONALLY say, "Let's count the leaves together; one, two, three..." while pointing at them, and you can hang them up and when Daddy or Grandma comes over, you can say, "Look at the 7 leaves that Susie found." Yes, she will learn that numbers are at play in all aspects of life, not just with Mommy's books and crafts. At the museum, you can say, "This sign says there's an octopus. Octopus starts with O. Can you find the O?" But don't swell on it. It's more important that she learn about the octopus and work other parts of her brain.
But life is more than counting or knowing letters. It's about using her hands and creating and building things. You already do crafts which is great. Make sure she is using scissors and glue and paint, not just making things out of sand but also touching the sandy surface. Let her use other skills like building with Legos (creative thinking, motor skills, imaginative play), and make sure she is doing gross motor activities like bike riding or playing hopscotch or climbing trees and monkey bars.
Go apple picking and pumpkin picking. Go to a stream and tip her toes in the water. Go on a picnic. Look at the sky and the clouds, check out the acorns and hickory nuts coming off the trees. If you don't know what something is, go to the library and get a book of trees/leaves/nuts and explore together what you have found. She will learn the value of books and letters and the fun that comes from mastering them without feeling she must learn them in a certain order.
If there is a cause for early intervention services in some way because of a true delay, the school will provide that free of charge. But there's nothing in your post that indicates that's a real problem yet, if at all. It's more important to relax about this - she's just not ready to sit in an almost classroom-like setting and have to parrot back the responses. Rather than drill her in the same things, I think you and she might be better served by expanding some experiences.