Unfortunately people are still condemned on what they did in their past.
Personally, this former job has NOTHING to do with her current one, and I think she shouldn't be judged on it. It would be different if she had.. say.. stolen on the job. That is also something that people wil condemn on, however, I would have much less trouble hiring a former porn actress than hiring someone of whom I know stole before.
But that is just me.