lend (someone) a shoulder to cry on

Translations
поддержать (кого-то) в трудную минуту
After her breakup, Emily really appreciated that her friend was willing to lend her a shoulder to cry on.
После разрыва Эмили была очень благодарна, что её подруга была готова поддержать её в трудную минуту.
Definitions
To offer emotional support and comfort to someone who is upset or going through a difficult time, often by listening to their problems and being there for them.