Doggie trust

I experienced something Friday that I hadn't really experienced before: Angst about the temporary care of one of my babies from work. She was adopted to a home out of town (the adopter had adopted from us before) and a pet courier service was taking her (and two other dogs) on an eight hour drive to her new home. As I held her, a Miniature Dachshund, waiting to put her in the van, she clung to me. I suddenly felt a pang in the pit of my stomach at the thought of handing her over to this stranger who was going to take her away. I have to admit that for a brief moment, my mind imagined that this company was nothing but a big rouse and that they were taking the dogs to an unknown location. This pet courier service is reputable and the people are well-trained (and I was told we've used them before), but I wished I could ride along to ensure her safe delivery. I kissed her many times before placing her in the van and, in a few moments, they were gone. I thought about her all day and messaged the coordinator later that night, inquiring if they had arrived yet. Shortly thereafter, I got a message that they arrived safely and the three dogs had slept together most of the way. They were happy and healthy and home. Still, I anxiously await the adoption update with pics of everyone.
I hadn't been worried about her adoption; just the in between part of getting her there. She trusted me and I wanted to make her feel like everything would be alright. For that brief moment, though, I didn't know if everything was alright, even though my logical mind knew it was.
I am reminded of it all the time, but this event made it even more clear: We can never break the trust of an animal in our care. They depend on us for everything and it is our responsibility to provide it. No ifs, ands, or buts.