We (my son and I) have had Mischka for several months now and she is just as spastic as the day we brought her home. It's very difficult to handle her as the moment you open her enclosure, she runs all over the place at high speed or she tails whips non-stop. (At least she's healthy!)
But last night for the first time she took some greens from my hand without running away. It's not much, but it's progress!