someone's heart is in

absence makes the heart grow fonder

One feels more love or affection for those one loves when parted from them.

all heart

Motivated by positive emotions, especially as productive of exceptionally generous or kind behavior.

another nail in someone's coffin

An event that increases the likelihood of or causes further failure.

answer someone's prayers

To be or do exactly what someone has been wishing or asking for.

answer to someone's prayers

Exactly what someone has been wishing or asking for.

apple of someone's eye

The object of somebody's affections; a person (or sometimes a thing) that someone strongly prefers; a favorite, a loved one.

bane of someone's existence

Someone or something that poses a significant problem to someone.

bash someone's face in

To beat someone violently.