Ratio of mass contained within 3 kpc of the isolation model for the dSphs shown in Fig. 2 (model sex156). Line colours and styles are as in Fig. 2. The 3 kpc cut-off displayed is chosen arbitrarily to enclose nearly all of the stellar mass within the isolation model. Despite the stellar population remaining resilient to tidal stripping, the gas and dark matter is able to be significantly stripped after each interaction resulting in a decrease in the total mass. The steeper decrease in gas mass – compared to dark matter – at approximately 12.5 Gyr is due to expulsion from supernova feedback before the gas reaccretes at approximately the present day.