Originally Posted by FeedOnATreeFrog
And when Ra's died, she felt the need to come back, exact vengeance, etc. They welcomed her back. Simple.
That's what she did. But it's frustrating because of the plot hole in BB. Why wasn't there a mention of her in TDKR as a BB flashback? It probably was because it would then be too obvious that Talia would be the surprise villan.
I guess you can look at it just like the mob did with the Joker. Batman foiled the LOS's plan and killed their leader. They just said "screw it" and let Bane and Talia do their thing.