Here's my suggestion ... buy your friend some fabric that says "Singapore", as much as you want or as little. At the same time, buy the exact same fabric and amount(s) for yourself.
Then when she goes home, she has the fun of making something, knowing that you are doing the same. You will do the same. Then there'll be the FUN in the reveal and comparison of what each of you did with your fabric.
It'll help you tie the threads of your friendship even closer. Instead of a gift card, make her a label with the sentiments you would have put in the card, with the intention that she can include it in her quilt.