Your donor gets nothing in return for her donation. Nothing but your communications.
Your communications have a big job to do: To show her something she may have no way of knowing otherwise: What her gift made possible.
That's how you cross the gap from a donation being a random, one-time event to building a meaningful and mutually beneficial relationship with your donor.
Learn some practical, no-nonsense things you can do in your donor communications that will fill your donors' hearts and minds with reasons to keep on giving.
Play: How to improve your donor's giving experience (right click or "save as" to save the file for later).