I am a 70 feral druid and soloed this guy today.

First,I suggest you better have these:

1). Major HP pots (or better ones) x2
2). Major Mana pot (or better ones) x1
3). the UI that shows your mana while you're in Cat Form(ex. Druid Bar)
4). Enable the auto self-cast in the interface options so that you can heal yourself without changing your target

OK, wear on all your tank gears.
My gears are not  good (half blue half green no epic) , with MoTW buffed:

HP:11154    AP:1181  Crit:24.38%   
AC:11180    dodge:22.23%         

Going to kill a mob that life is 3 times to me :D

Stand 30 yards away from her, cast Starfire and Moonfire and switch to bear form. With Demoralizing Roar she damages me 450-500 each hit. At start use mangle and Maul, only use swipe when you have more rages( say, more then 50). And I used a trinket got
from the Hellfire Peninsula goblin's quest that increased dodge by 192 for 10 secs while you use it(that increased my dodge to 32.37%).

When your life is about 60% (hers is about 70%), start using everything you can cast to consume your rage. When your life is 50%, use Bash (if bash missed or dodged/parryed I will suggest you run away and try again)

-> switch back to human form
-> run away and drink a HP pot
-> cast Regrowth and Rejuvenation
-> switch back to bear form before she hits you.
(I know this may be hard because the global CD and lags, but it's ok if you got 1 or 2 hits before you switch to bear form)

So now your life is about 90% (And with 2 HOTs!) and hers is 70%. Now keep fight same way before.

While the Bash's CD is 30sec, start save your rage by only using mangle(and Demoralizing Roar if the debuff is gone). While the CD is 15sec and your rage is alomst full , cast Frenzied Regeneration and you will have a bonus 2500 life in 10 secs (during this time, only cast mangle if you have enough rage to consume).

When the Frenzied Regeneration is over , consume your rage by casting everything and Bash again. Now your hp is about 50-60% and hers is about 50%,this time the pots are still in CD so you just run away and cast the two HOTs and then switch to CAT FORM (yes, time to kite).

This fat moves slow so with feral spec talent (cat +30% at outdoor) your speed is a bit faster then her. DO NOT forget to cast Faerie Fire while it's CD is over! Or you will leave combat and have to do this again! So you better clean the way to north road before you start to fight(kill the mobs but do not loot/skin so the corpse will disappear slowly, so are the repops). You can cast Faerie Fire even if you are not toward her, so the kite should be very easy.

Then just kite her along the road(no pat mobs,it's very safe) to north-west.

After like 1~2min kite(use Innervate and mana pot during this time). Turn around and fight again (The CD of Bash is over and Frenzied Regeneration is one minute left). Remember your life is about 50% and so is hers.
(you can wait your pot's CD but that is not necessary)

While your life is 20%:
-> Cast bash and do the heal thing (use HP pots if you can)
-> do the same thing(Watch the Bash's CD and cast Frenzied Regeneration)
-> Bash again.

This time I dun think you can heal yourself because you do not have enough mana.
(you are feral spec and with full feral gears)
So just use your Heavy Netherweave Bandage and switch to bear form.
(for me I healed like only 4-5 ticks)

After 10-15 secs, she will die and your quest is DONE! For a 70 druid I got like 22 gold and a nice Idol, sweet!

Hope this helps for all druids that cant not find groups to do this quest.