Sydney is very glad she has woken you when she did.
She can plainly see just how aroused you were. Although she wasn't worried that you would taken matters into your own hands, she knows she was pushing you farther than you had ever been pushed before. She had almost forgotten about her ability to cause you to have wet dreams, and so she is thankful she came back to check on you. She doesn't want your tension to be dissipated so easily.
She repeats her question:
"Do you want to go to the park to read and have a picnic lunch?"