I would like to know the meaning of this following sentences:
1)'her young heart had gone out'(talks about her husband)
(What are you reading?
"Heart going out" means that she gave her feelings/love to her husbandů
It is most usually used, in conversation, to express sympathy:
My heart goes out to you in your time of grief.
"Come-hither eyes" is usually used when describing a female and means that her eyes are attractive to men: that her eyes cause men to want to come to her - generally in a flirtatious and/or sexual way.