Singer Britney Spears has responded to her son Jayden’s recent comments that he and brother Sean, 16, have cut all contact with her. The singer?took to her Instagram account to share a lengthy post explaining?her actions over the years and also called out her ex-husband Kevin Federline. “I’ve tried my best at being the best person I can be.. To be basically held hostage in homes under nurses and bullshit. I hope one day my kids understand my reasoning..," she wrote.