Most decorators have more than one client at a time, so don't expect for them to give you their full, undivided attention. Some decorators also have clients that they work with on a regular basis. Although it's important for them to establish a good rapport with all of their clients, those lasting and consistent relationships are of huge value to them. This may mean that you get pushed under the rug sometimes because of a higher priority client.
It may seem like a silly question to ask, but find out if your decorator has time for you. Be clear about when you want to see your project completed, and make sure that she has the available hours to put into it.