Looks like you're doing fine with it.
I would find some different fertilizer for your Mom, the top bits look SO green. Too much nitrogen, the first number of the old 10-10-10 on the label, or as some stuff I saw the other day, 16-55-10. Wowee, that one is toooo unbalanced! Best for Adeniums is something in the 10-20-30 ratio, but that's not easy to find. Hydroponics folks use that ratio.
I would leave the plant 'hanging' for at least a month, and six weeks, like Mike says is fine. The smaller roots might turn brown and dry up, but that's OK. They heal, and you can pull off the dead parts easily with a little tug.
I don't know if too much humidity is bad (I live in 60% here--) but for sure, if there is any soil still stuck in the roots, that's real bad. It can cause rot, in my experience.
