Perhaps, but she also has to convince the tree to let her go, so we will be focusing on how she 'wins over' Hirilorn during her imprisonment. Interactions between characters tends to be more interesting than simply working with inanimate objects in solitary, though there are exceptions.
Also, we will have to figure out how Daeron features into this. Naturally, he is not named as being involved in Lúthien's escape in the published Silmarillion, but does play a role in the Lay of Leithian. We have already made some decisions so far this season about Daeron, his relationship with Lúthien, and how he interacts with her once Beren comes to Doriath. As such, he is not in a position of having 'betrayed' her yet...in Episode 4, he merely urges Lúthien strongly to put an end to her secret anthropological study of Beren, and then Lúthien makes the decision to go to court on her own.
But how does Thingol learn that Lúthien intends to follow Beren? Does Lúthien confide in Daeron, and then Daeron tells Thingol? Or is something else going on? If Daeron does betray Lúthien's confidence here, then what will their interactions be like during her imprisonment? We definitely wanted Daeron to think that Thingol had gone too far, so he would be willing to aid Lúthien, but if there is a betrayal between them, she may be reticent to trust him.