Meghan Markle has been praised as a “supportive and loving friend” by a pal, after she arrived in New York via a private jet. The Duchess of Sussex was joined by two of her long-time friends, Bobbi Brown, a make-up entrepreneur and Misha Nonoo, a fashion designer, when she stepped out at a business summit in The Hamptons over the weekend. New friends were also there to support Meghan at the G9 Ventures Summer Summit, which was hosted by power broker Amy Griffin, who is an investor in brands such as Bumble, Goop and Hello Sunshine. Spanx founder Sara Blakely and millionaire IT Cosmetics co-foun…