I've never seen this plant available in my area or grown it but I's think it would be easily propagated by rooting cuttings. As with some of the other Tradescantia, remove the lower most leaves and stick the cuttings into a moist well draining potting medium. Another method of propagation is to lay a stem on top of the soil and keep moist but not soggy. The plant should send out roots along the stem at each leaf node.
A similar Tradescantia (I think) to 'Maiden's Blush' is 'Blushing Bride'. There's a comment on this page that talks about propagating:
Inch Plant (Tradescantia 'Maiden's Blush')
