I dont think linking the bruises to Zeke requires her testimony. In the context of this being "balance of probabilities" not a criminal level of proof, it is realistically possible without testimony. Once DV injuries are confirmed, all they need to establish is that it is more likely Zeke than someone else. To be honest, in any case of DV taking place in a residential property owned or rented by a couple, the spouse is always statistically the most likely culprit (what other suspects have access?).