I think it was sweet of Jon to put in a good word for Ellie to get the new job. And while I understand that Ellie did not want anyone to know about her being unemployed, I think when Jon asked her outright if anything was wrong, she probably should have come clean to him. It was also out of line of her to play the "Diane" card.
I think it was good that all her friends told her as much - friends who told her the truth, instead of maybe what Ellie wanted to hear.
But the end, where Ellie attempts to converse with Jon in French - despite the fact that she it was really rough, it showed that she was willing to try and learn...just like she tried to learn to skate...because it is important to Jon.