Around here at least, it works like this:
If someone sends you a Starbucks card (which is itself reloadable, btw) you can link it to your Starbucks app and transfer the balance from the card to the app.
These amounts do not expire. However, the free drink you get for every $X spent does expire.
Dollars to doughnuts she had a free drink offer that was going to expire, and rather than just get plain old coffee she decided to get a more expensive drink (because "free"). Though it's not like she's been drinking plain old coffee all along anyway...
In other words, she's stupid and conflates terms. Then her laziness keeps her from correcting herself. And her self-absorption keeps her from noticing people use the terms differently and appear confused when she, Chantal, tries to communicate. And her narcissism keeps her from ever suspecting she might be wrong about something. And her dishonesty makes her double down and insist that it's actually how they say it in Canada because half of them speak French. And her gluttony and greed motivate her to keep doing all of the above because this way she gets whipped cream and besides, it's better to look like a narcissist than a glutton so you can deflect to mental health rather than confront the fact that you're just shitty and lazy. Hee hee!