Thanks for the replies Pam and Catmandu.
Samantha was fine last night, we did block off access to the new rug and she was no problem.
I think the new carpet smell may be part of the problem but she seemed more upset with the strangers in the house and the noise they made.
On Monday we will be moving some new furniture in the room so I hope she can deal with that!
In a few days I will have some photos to post of her checking out the new carpeting so stay tuned.