First, I am very sorry that any therapist would announce to you that you are an “old cat lady in a younger body.” Also, telling you that you are depressed, when this isn’t how you feel, is off-base. Her comments have more to do with being ignorant and unskilled as therapist than you. I hope you have found another professional to talk to.
Because you enjoy different things, prefer quiet activities, and have a different temperament doesn’t mean there is something wrong with you. If you desire friends you don’t have to change who you are, but rather change where you look for connections. Look for like-minded people, such as joining a book club, and be around people with similar interests. But also remember that some differences can be very healthy. To quote Ani DiFranco: “I know there is strength in the differences between us. I know there is comfort where we overlap.”