I flatly disagree, OP. She IS being cruel and neglectful. This is a puppy, a vulnerable young creature. If she is this cavalier about its early care she is risking disease, theft, serious behavioural issues at a later date, overheating in summer, freezing in winter - does she have any idea how much pups CHEW? The pup will be at wires, cables, bodywork in the van, going mad with frustration and loneliness. It will be sitting in piles of its own shit and wee, as pups with the best training in the world take ages to get housetrained. Show her some of the threads on here about puppy ownership and the reality of the shit, the bites, the disturbed sleep, the chewed possessions, the frustration, the need for training. I am speechless that any one who knows a shred about care for dogs would regard this as anything other than cruel.
I can also foresee what will happen. ONce it is crapping all over her precious bloody van, and the van smells, and it is barking, and her boss complains, she will dump it, either on a rescue or in a pound. If in a pound, it will ahve seven days before it is killed. A poorly socialised dog with by that time undoubted behavioural issues. Does your daughter have any idea how many perfectly healthy, beautifully behaved dogs are killed in Council pounds each day? Has she BEEN to a Council pound? Does she ahve any idea how stressful a noisy, smelly kennel is for a dog, surrounded by strangers, unable to exhibit normal behaviours, then finally after a week led to its death by a stranger?
And if it goes to a rescue - well, poor bloody sods like me will then have the job of trying desperately to raise money for its care, find a home for a dog that is now behaviourally challenging, and coping with trying to find a foster home to rehabilitate it. It won't be your daughter, because irresponsible CRUEL owners like her seem to think rescues are full of lovely homes queueing up to provide a cosy sofa for damaged dogs. How I wish that fairy tale was true. I'm going to be standing with a collecting tin on Sunday actually - believe me I'd far rather be at home with DH, making marmalade for Christmas.
Show her this thread. Tell her again that her actions are CRUEL, and irresponsible.