The Tears grifters provide a series of quests which are repeatable solo missions that scale to your level (from level 45 to 60). The missions take place within small instances around Maj'Dul called A Maj'Dul Residence. It is random as to which mission you are offered. The reward is experience and faction tokens of your choice.
You will be offered a quest every 30 minutes. If you decline the quest (or accept and delete it) you will still have to wait out the 30 minute timer to be offered another one. If you accept a quest and complete (or delete) it after the 30 minutes have expired, you will be offered a new quest as soon as you turn in (or delete) the old one.