One of the Marae's hundreds of senseless hobbies is the spontaneous ransom of captured Eldar. He does this infrequently and chaotically, purely depending on his mood, sometimes in raids, sometimes in Commorragh. After that, the days of hell begin: if eldars are lucky, Marae himself will condescend to deliver them to the nearest Eldar spawn point, if they are unlucky, they will have to wait in the Drukhari tower from several days to several months (of course, if they are ready to cooperate in any way). Marae forbids his Drukhari to touch the new arrivals, and they are angry about it; the Eldar are also not allowed to touch anyone to avoid retaliation, and they are angry too. As a result, everyone is angry, except Marae, who seems to be enthusiastically basking in this atmosphere of mutual hatred :DD
Eldar often move closer to Marae's rooms, sometimes literally capturing part of it; he's indifferently friendly all this time, which still make them angry :D If the Eldar sit in the tower for too long, they get used to it and start to check his boundaries, like here (yes, she just came to his room to threaten :DD)