I do think that Lily is just being lazy - when she is feeling good she has no problem picking up her feet.
On another note: I just bought some Renegade hoof boots for her and my trimmer put them on and Lily completely freaked out at first! She started stomping, jumping and lunging forward and I thought for sure that she was going to fall down in the aisle! I took her off the lead rope and let her run around in the paddock on her own and boy was she prancing!! It took about 3 or 4 minutes for her to just calm down and mellow out. Then of course she inspected every inch of those "things" on her hooves. After that she was like "what boots?" - what a stinker!!
Again, thanks for all the help!