Sorry, respectfully,
the difference being he is male and your daughter is female.
Daughters can be under fathers sponsorship for a lot longer than sons, - I may be wrong.
It would also depend on his age.
Most likely, it might be the company people putting up these restrictions. Being in a sales line, they want to be able to control his travel. You get my drift.
I was on my father's sponsorship for a long while before changing to company. Repeated reminders from HR. However, times were different.