Talas was one of the best minor characters on the show. The chemistry between her and Malcolm in "Proving Ground" was brilliant. But like so many things, the writers made a complete monkey's breakfast of what they had to play with.
First there was this out-of-left-field affair of hers with Shran. There was not the least bit of chemistry between them and then they let her hop around in her underwear for a moment, before killing her off needlessly.
It would have added much more to the plot of the Babel-arc to have her board the drone-ship with Malcolm, rather than killing her off to contrive a short brawl between Super!Archer and Shran.
Imagine the possibilities - showing the humble beginnings of interspecies cooperation by having Talas and Malcolm beam over and that's not even mentioning the other possibilities to show a budding affection between these two - they certainly had the chemistry for it.