@DomGardens - Thank you! She is going on 8 years old. Mother tree is 37-40 years old.
@drew51 - I guess she was busy putting down roots. There has been a massive amount of growth here too but will be easy to control because of the hard prune we did at the end of last season.
I know that I posted somewhere that we planted a Sweet Diana in-ground in the northern garden, Oneonta, NY, zone 5b. Although we are zone 5b, temperatures are still regularly recorded in the -20F and -30F range. I think the low in town was recorded as -23F last winter. We're on the very top of the mountain and get much colder so going to guess we were -30F or colder. But we regularly sustain negative single digit temps for days at a time. Last year we planted a Hardy Chicago, Florea and Sweet Diana all in-ground with no protection. All three varieties were 2 years old and healthy. The location for planting wasn't ideal but they do receive 9+ hours of direct sunlight every day. The HC and Florea did not make it. Sweet Diana died to the ground but pulled through. Came back strong and healthy and is a little over 2 feet tall now. Definitely a testament to the good genes of this variety. This is a pic of how she looked a week or so ago.

Looking forward to seeing how she does this winter.