Agreed with the above. it's a learning curve, and yes, for kids at your kids age, 7 days is too long. Every 3rd day could be the other parent taking them out for a period of time, then returning them at a set time.
You are right, they need to know exactly what to expect. That was very key for my daughter.
Or you alternate every 3 or 4 days.
And also, lots of approval seeking behavior, like you don't have confidence in what you are saying. Why do you keep having to tell her how much they are looking forward to seeing her? Why are you trying to make her feel good? Not your job.
