[Mg/Fe] vs. [Fe/H] (left panels) and MDF (right panels) for Sagittarius (top panels) Fornax (central panels) and Sculptor (bottom panels). Data for [Mg/Fe] vs. [Fe/H] are from Liberatori et al. (2025) for Sagittarius, Reichert et al. (2020) for Fornax and Hill et al. (2019) for Sculptor. The thin solid lines and shaded areas represent the non-parametric Gaussian KDE data regressions and their 1σ confidence interval for [Mg/Fe] vs [Fe/H]. The thick solid lines are the model predictions. For sake of comparison with observations, in this and the following figures we show theoretical [X/Fe] vs [Fe/H] curves for the first 99% of the predicted cumulative distribution of stars. Observed MDFs are from Minelli et al. (2023) for Sagittarius and Molero et al. (2021) for Fornax and Sculptor.