By Alex West Arnold Schwarzenegger’s ex-mistress and house keeper, Mildred Baena, was seen in a rare social media post. The pair’s son, Joseph Baena, posted a Mother’s Day celebratory post featuring Mildred. Joseph and his mother posed together with huge smiles in the picture while she held a bundle of pink, black, and gold balloons withe one saying, “Another year of fabulous.” Mildred also had a bouquet of wild flowers wrapped in brown parchment. Mildred wore a long-sleeve black dress with a lace top and left her short brown hair down in curls. Joseph smiled, standing behind her, and wore a w…