Re. that last point ("Very little to no growth"):
I've got a Trich which I've had for ~6months and which hasn't noticably grown.
As I wait longer and longer this is becoming more and more apparent.
I put it in the sun (well, its in the sun for part of the day, and for the rest in partial-sun).
I fert it rarely. Maybe once a month or two.
I'm quite sure that the pot it's in is big enough.
It's not discoloured or suffering from any other obvious problems.
Hmmm, not too sure about this one - if its a cutting without roots, it could be still in its rooting phase. I have a couple blue myrtles that I took as cuttings maybe early last year or even late 2005 and they have only just put out new growth now. Trichs are fairly quick to root, perticularly in warm weather. I dont fertilise mine at all atm (all mine were cuttings from mid/late 2006), and they have just started taking root (obvious due to flower buds finally maturing - these were on the cutting at the time they were taken from their mothers). I here a few others dont really bother with fert, though it does seem to give them a bit more grunt
Pot size usually only matters if it is already rooted and becoming root bound. As long as its a fairly decent size - maybe about 20-30cm diametre by about 30-40cm deep, you shouldnt really have too many probs, though the bigger the better.
If its not discolouring or anything, I'd say its probably just a slow grower. If there is still no growth by the end of summer, I'd reassess the situation. Maybe change the potting mix and possibly swap to a slightly larger pot. But be sure to keep up the water (I water my collection about once a week or twice every 3 weeks), but be careful not to water to the point of rot - especially if its a cutting.
Let us know how it goes and if she restarts the growth cycle. Best of luck