I am sure you have the skill! Hey, even dog trainers have dogs that are hard nuts to crack! When I went to school to become a dog trainer in Italy, (that was, before becoming a CPDT-KA), our instructor's dogs were mostly ill-behaved, me and others who were attending were all like, what happened to dogs being our "business cards?"
However, turned out she owned 7 dogs, and out of those 7, three were super stars, she just didn't have the time to train them all to that level. Understandable, because she was breeding, showing, training students and prospective dog trainers and then therapy dog work on the side taking her dogs to schools, children's hospitals etc. I always wondered how she was able to juggle all of that!
Grisha Sterwart had Peanut, her dog who needed to be deeply rehabilitated which inspired her to create BAT, even then, she still was facing some issues that she kept working on because those issues were so ingrained.
So I am sure you already looked the trainer's credentials up, so there's a trick title and then you have a behavior consultant title with IAABC. I love, love, love, IAABC and was debating whether getting that title too, but then decided to go with James O' Heares' Companion Animal Science Institute and slowly working my way towards getting a Dip. CBST title, only that I rarely have the time to study and keep postponing it. Wouldn't it be great to have 48 hour days?
I would love to see Esther's videos on her progress, but please make sure the trainer is OK with you posting them here.
I am happy that you will be getting the ongoing support, that is, IMO the most important feature to look for. It's good Esther is staying longer, my best results with board/train were with those who stayed the longest. The more the better so to train at a more fluent level and get better stimulus control, the extra weeks really make a difference!