These guys actualy like water, they just don't like having "wet feet". in other words, they like being watered daily when healthy, but you MUST have a very free draining inorganic mix. Go with equal parts akadama, some sort of washed pumice, and lava.
From the pic, it's hard to tell, but it looks like you have a very organic, wet soil mixture. they also will go thruogh a leaf drop after being stressed from to much or to little water, temps under 40f, etc.
If you lose this one, they are easy to replace from a cutting. let the cutting sit out in the air (not in the sun) for a day or two so the cut part dries out, or you risk some rot developing at the cut. Give them lot's of light. They will live indoors at a sunny window, but may get very lanky and develope large leaves. they are easy once you learn their habits.
good luck