learning our letters - the ones in the alphabet

Amaya knows every letter except for Ee, Ff, Gg, Hh, and Ii. I haven't figured out how she can learn everything except for that section of letters. I've been working with her for weeks just on these letters, but it doesn't seem to be sticking. So, with this in mind, today goes like this: Me and Amaya, sitting at the small group table, working on letters. I write a letter on the white board and she names it. She then gets to erase the letter with her finger (note: a very powerful reward. She'll do a lot to erase a white board with her finger).
I write 'h' on the white board.

Amaya (glances at it and then starts looking around the room): "I know the animal that starts with that letter."
Me (thinking this is great progress and that she'll say 'horse' and then remember the letter 'h'): "Good. What is it?"
Amaya (still gazing around the classroom): "It's that animal that has two ears.....two little ears....they poke up....."
Me: "Yep, uh huh?"
Amaya (now staring intently at what Cycret is building in the math center): "Two little ears....and a little nose....it pokes out....with a little mouth..."

Clearly she's not going to get it. I write 'e' on the white board.

Me: "What letter's this one? (E E E E E E!!!)"
Amaya: "Oh, that's the easy letter. That's the one that's not in the alphabet."

It's good to make that distinction. Apparently it's easier to learn letters that aren't in the alphabet than it is to learn those that are in the alphabet.