Can you post an overview photo of the plant? A. x 'blue elf' is a very heavy clumper and tends to have a pretty distinctive 'habit'. From your close-up pictures it is hard to see what your plant looks like as a whole.
I think A. x 'blue elf' is a pretty good suggestion, here is a picture of my clump maybe comparison with that will help. It also has A. x 'rooikappie' in the back ground (with the flowers) and A. vera var. chinensis (or A. massawana - but A. vera var. chinensis is more likely given the climate here in Mesa, AZ, but the flowers on the plants are very very similar), which is the big clump with the flower buds in the back ground on the left .
