Hale never voiced her. That myth was debunked forever ago.Actually I think Jennifer did voice Tira in SC3. I started to doubt that but after hearing her SC3 voice again recently, it sounds way too much like Hale for it to not be her. She just couldn't reprise her role in later games for the same reason as Crispin Freeman and Kari Wahlgren. At least that's what I've heard about the whole thing,I could be completely wrong. Though I'm pretty sure her SC4 and SC5 voice is Christina Puccelli, Katie McNulty being a pseudonym. Not positive though, I don't have much to back that up aside from some of her SC5 story dialogue sounding pretty damn close to her usual speaking voice.
But back to Talim, I'm not entirely certain Hynden is voicing her this time around, as she does sound slightly different. Could be Kira Buckland like someone else said. I looked up a compilation of some of her roles and her voice is quite similar.