I fully understand. We boarded the girls when they were younger and we have a friend and family member who will help us out for short periods of time like if we need to go for a weekend. However, I really have become less likely to think about traveling for longer periods because of Katy. Annie would be fine boarding but Katy is more challenging now and requires more care. I'm not sure I could board her at this point. She also would be more challenging to travel with as well.
If her Cushing's Treatments improve some of her symptoms I'd think about perhaps boarding her again but not otherwise as she requires quite a bit of supervision. Bailey loved to travel and we took him more places because he struggled with car sickness but he hated being left behind and he had no issues meeting new people. Katy even when she was younger got overwhelmed by strangers so taking her with us unless we plan a vacation around her is usually not an easy choice. For instance I could take Annie to help out with a family issue and she'd be fine. We took Bailey to visit family out of state and it wasn't a problem. I'd never have done that to Katy. The changes would stress her out too much even when she was younger.