Poiché Caterina ha severamente criticato Mario , (pro) era imbarazzato .
because C.FEM.SG . AUX.IND.PRS.3SG . severely criticize.PST.PTCP . M.MASC.SG . pro be.IND.IPFV.3SG . embarrassed.MASC.SG . 
Because Caterina has severely criticized Mario, (he) was rather embarrassed.