I really do not know what to tell you. Take her words at face value and try to move on. Maybe the time apart will help. Back in 2009 my now husband and I separated for 9 months, it had nothing to do with the age gap, but they were valid reasons nonetheless, but we ended up back together. My signature "Love is when the pain of being apart is greater than the pain of being together" came from that experience. Being together in a relationship is no bed of roses, specially with an age gap. Maybe she will feel pain of being apart, and will come back, maybe not. Time will tell. Your heart will also heal in its own time.
You know it's love when the pain of being apart is greater than the pain of being together.