Pheobe is 10 month old, she was spayed at 6 month, she hump our arms (my husband and I only) not very often though, and she mark too (only outside where other dogs has been) she also lift her leg when she pee
nothing about their heat, you can call the vet and they can let you know, also if you are not planing to breed her, I recommend to spay her, is healthy that way too
