She's not elite and doesn't have any elite guards anymore.  She's level 62 and still heals herself very effectively and fears though.  Even if you clear the area first you have to bank on at least one respawn.  I soloed her reasonably easily  as a level 60 hunter.

Also, for those of you too lazy to get coordinates like me, there's more than one tunnel in hive regal so make sure you go the south west one.