Nina Dobrev is “doing pretty well” since her dirt bike accident but still has a “way” to go. The 35-year-old actress – who is best known for starring as Elena Gilbert and Katherine Pierce in ‘The Vampire Diaries’ – sustained a number of injuries including a fractured knee, as well as damage to her ACL and meniscus amid the crash in May but “surprised” doctors at how quickly she has made progress in her recovery. She told People: “I think I’m doing pretty well. Doctors were pretty surprised. I’m a little ahead of schedule in terms of healing, but it is still a very long process. “I didn’t reali…