Debbie Rowe -- the mother of Michael Jackson's two oldest children Paris and Prince -- claims she's "worried" about her kids' brother, Blanket. During a shopping trip in Calabasas earlier today, Rowe 说 she knows nothing about the investigation into the stun gun incident at the Jackson compund in Encino -- Where Michael's kids and Jermaine's kids are all currently living with Katherine Jackson. But Rowe did admit that she was aware of the reports that Jaafar was playing with a stun gun, while Blanket was nearby. When asked if she was worried about Blanket, Rowe said, "Of course I'm worried.. Why would I not be worried about a child? He is their brother." Rowe claimed that she never been to the Jackson compound -- but told us she has been visiting Michael's tomb and tried to visit as often as she can.