I asked my friend to design a flyer for an organization's annual dinner, asking her to send me an invoice so I could pay her (I can't design worth shit, she's doing me a huge favor).

She said she'll do it, declined payment, and doesn't even want me to get approval for her to put it in her portfolio...

How the hell do I pay her back for her work? If we lived in the same town, I'd at least take her to coffee and lunch, but she moved states and I moved countries :(