Yea, apparently she is not willing to teach us that even for 5k points. Perhaps she likes the amusement of seeing us shoot vyrewatch with other bolts and failing?
Vannaka and Kuradal seem to be the only Masters. Duradel wields rune claws and got owned by a lousy Mahjarrat, Mazchna wields crummy addy armor, Tureal is...pathetic.