Reactivity to new neighbors.

Hi everyone! I joined this forum a year ago when we first adopted our rescue dog (lab/hound mix), Kinzie. She came to us very anxious, nervous and reactive to other dogs and people. As I mentioned in previous posts, it was completely overwhelming at first and I wasn't sure I could do it. A year's worth of patience, consistency and love has paid off as she is much more calm and obedient now. We still have issues with reactivity, but much improved. She can ignore other neighborhood dogs now and is only reactive maybe 30% of the time (versus 100% before!)

That was, until last week when new neighbors moved in. Our old neighbor was a single guy who was super quiet. The new ones are a family with three young (noisy!) kids. Now her reactivity is almost like it was a year ago. She is on high alert in the backyard, barks loudly whenever they talk or move in their backyard. To make matters worse, one of the kids likes to yell back at Kinzie when she barks and will mock howl or yell back to her...which makes her bark MORE! I spoke to the family and let them know she is reactive and it will calm down in time, but to not yell back at her. The parents seemed so understanding and were really nice, but the kid still does it.

Im just frustrated. It feels like Im back at square one. I need some words of wisdom!