I thought I could hear Jerry's voice as her when I watched the episode, but going back, I don't think I can. I assumed (which is always a bad a idea with wikis) that if someone else had performed her voice, it would have been listed on her page, but that wouldn't necessarily have been the case for a non-speaking performer. Thank you for catching that, I'll try to be more careful in the future.
Also, I'm sorry this wasn't posted for you when you joined, but please take a look at the Special:Community page where you can find links to our FAQ and Guidelines. You can also find it via the "Get Started" button on the right side of every article on the wiki. Thanks!