Empathic Computing is a research field that aims to use technology to create deeper shared understanding or empathy between people. At the same time, Mixed Reality (MR) technology provides an immersive experience that can make an ideal interface for collaboration. In this paper, we present some of our research into how MR technology can be applied to creating Empathic Computing experiences. This includes exploring how to share gaze in a remote collaboration between Augmented Reality (AR) and Virtual Reality (VR) environments, using physiological signals to enhance collaborative VR, and supporting interaction through eye-gaze in VR. Early outcomes indicate that as we design collaborative interfaces to enhance empathy between people, this could also benefit the personal experience of the individual interacting with the interface.