English wasn't my native language so I was forced to search for some idioms explanation. You can probably figure it out from the context, but I was curious about idioms source.
Ch.40 page 6:
She wears her heart on her sleeve.
We use the phrase "wear your heart on your sleeve" in a casual way to say that we are showing our intimate emotions in an honest and open manner. ... In the Middle Ages, sleeve not only referred to a part of a garment covering the arm but to a piece of armor for covering and protecting the arm. When participating in a joust, knights would often dedicate their performance to a lady of the court and wear something of hers, such as a scarf or ribbon, around their sleeve of armor, which indicated to the tournament's spectators which lady the knight favored. This chivalrous and affectionate gesture may be the source of the saying "wear your heart on your sleeve."
The Origins of "Wear Your Heart on Your Sleeve"
Ch.40 page 7:
... this time for all the marbles!
"For all the marbles" means for complete victory or to earn or win all the prizes. ... The idiom for all the marbles came into use in the latter-1800s and is derived from the childhood game of marbles. Children often played marble games that involved the victor keeping and owning captured marbles. In this type of marble game, a shot may be said to be for all the marbles.
For all the marbles Idiom Definition
History and idiom lessons with yuri manga. Thanks for the educational translation!