The main female character has problems in her life. What are these problems in the story and how are they evident in her relationship with the main male character?

The female character has insecurities that flow over to her relationship with the main male character of the story. When she visits him, she needs to reassure herself that she has done the right thing, that “he needs her.” She looks for signs of his need for her from his facial expression and other gestures such as how he holds her hands. She is uncomfortable in the presence of the other guests and does not contribute to the conversation, even though she knows that she should. She is worried that the others will compare her with his ex-girlfriends. She is not even sure about how to act when around him. It seems that she is desperate for their relationship to last, so much so that she is willing to behave in ways that might be attractive to him, for instance, she thinks that he likes her to be diffident. The man is a millionaire, and it seems that she has never dated a man of his social status; she is a stranger to his way of living.
When they go out to picnic, she wonders why he loves her: “What is it that he sees in me, he who loves the sea, sloops, jokes, masquerades, and deferment? What is it that he sees in me who loves none of those things?” For her, the sea and the mountains are “beautiful but unreal.” The other guests like to talk. They talk about “beautiful sceneries,” places they have visited, but they never talk about themselves. They do not talk about “love or family” and she wonders why.
She feels out of place among his friends. She does not fit in, perhaps because she has totally different interests. When he says that the woman Iris has “incredible willpower for living,” as she is happy in spite of the many problems she has faced in life, she feels like he is hitting at her for not fitting in with his company of friends. The relationship is broken finally after she attempts to drown in the pool.