"All the seas of the world tumbled about her heart." Explain with reference to context.James Joyce's "Eveline"

In his Dubliners, James Joyce wrote
of the tragic Irish, a people for whom the assertion of psychological freedom is
impossible because of the historical, political, religious, and social patterning of
Ireland's Dublin in the 1900s.  Eveline is among these tragic Irish, for she cannot
break the ties of her promises to Blessed Margaret Mary Alacoque and her dying mother to
take care of her little brother.  Also, she lacks the courage to leave what she has
known:

It was
hard work--a hard life--but now that she was about to leave it she did not find it a
wholly undesirable life.

As
she stands among the crowd in the station at the North Wall, a dock on the river Liffey
from where the ferry boat to Liverpool leaves each day, Eveline prays to God to direct
her and show her her duty.  As the boat blows its "long mournful whistle into the mist,"
Eveline feels much distress as the adult world of desire ebbs and her fear of the
unknown rushes in:

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All the seas of the world tumbled about her
heart.  He was drawing her into them: he would drown her.  She gripped with both hands
at the iron railing.

It is at
this point that Eveline experiences what Joyce has termed a psychological paralysis.
For, she is caught in the circumstances of her life at home and she surrenders to her
religious servility, her subservience to her father, her promises to her mother and her
self-deception--a tragic figure.