Final answer:
Helen behaves timidly and cautiously during the welcome home dinner, feeling isolated and disconnected. She struggles with the customs and language of her hosts and has difficulty interpreting their facial expressions.
Step-by-step explanation:
During the welcome home dinner, Helen behaves in a timid and cautious manner. She is described as being isolated and disconnected, struggling to understand the customs and language of her hosts. She has trouble interpreting their facial expressions and fails to realize certain social cues, like when she should make a toast.