hello tulpe
Sep Anx is specific clinical diagnosis with specific sypmtoms.
Its acgtually quite rare, in most of these cases its more often like separation related problems.
All pups, by definition, have issues with separation from owners.
That is, they havent devoloped independance yet, which is a process that takes a couple of months.
The same would apply for car travel.
It would be a natural starting point for a pup to be of car travel.
What are the specific signs and symptoms for your pup that indicate to you sep anx?
The questions to ask at this point would be:
how have you done your home alone training?
what have you done thus far to foster an 'initial' sense of independance?
how have you done your socialisation training?
As a dog trainer myself, my first instinct is to think that maybe you just require a pup training class, instead of spending money on a collar which either works completely with some dogs, or makes no differnece whatsoever with other dogs (the latter is my own experience in my study).
Using a DAP collar is kind of getting into the territory of dealing with behaviour probs, when it may just a normal puppy training and socialsiation issue that we can help or advise you on?
Also, what breed is your pup, how much has she left your house, and how do you exercise her?.