Kelly Clarkson is “fighting for what she feels is right” with her lawsuit against Brandon Blackstock. The 41-year-old pop star recently launched a lawsuit against her ex-husband, and Kelly is determined to get what she feels is “owed to her”. A source told Us Weekly: “Filing this lawsuit against Brandon had nothing to do with her alimony payments. It’s about fighting for what she feels is right and owed to her.” Earlier this month, Kelly launched a lawsuit against Brandon and his father Narvel Blackstock‘s management company, Starstruck Entertainment. The chart-topping singer has accused Stars…