I finished the quest sometime ago.  I'm a level 62 BM hunter.  But, I decided the lion, Sian-Rotam, just had to be mine.  So, I found a friend who had not done the quest chain yet.  We did the first 2 quests to get to the Shy-Rotam quest, farmed for the Frostsaber sacred meat, which took forever, and we started the quest. Soon, things went terribly awry.  I abandoned my pet too soon, we had no healer (my friend is a level 53 Rogue), and we took too long to kill Shy-Rotam.  Sian was summoned by her mate, and they both feared me.  I set my trap and started to tame Sian when Shy died but just as the trap expired i was feared again.  By then my hit points were too low and my mana was non-existent. We abandoned the quest and tried again.  It took a few more tries, many traps, and a feign death to get this beautiful animal but it is now tamed!!!  It was difficult but worth it.  The message here is: don't give up, it can be done even when you have a lot of trouble doing it.