I have no idea why she would be "feared" but it seems to be so. I would assume the threats are monetary in nature and unspoken if there even are any. How muych is it worth to have someone use your textures/props in her artwork and advertise for you in the gallery? How much is it worth for someone to set you up as a tester? Thats the only thing I can think of. But I haven't seen Dmentia do any of those... so that speculation is not about her specifically. It's more about the power of the marketplace 'inside' :)