Lily wasn't quite sure what he would appreciate in terms of showing him. She toyed with the idea of summoning his lightsaber but something told her that would not go down well at all. But she had to do something that was a bit more impressive than transfiguring something. She took another step away before looking around for inspiration. Something big...And then she had it. She closed her eyes for a moment and focused. Her first kiss with James. Their wedding day. Finding out she was pregnant and holding Harry for the first time. She opened her eyes again, keeping those happy thoughts rushing in her head as she pointed her wand, saying the spell within her rather than out loud.
Very quickly from her wand came the wispy figure of a doe. It ran quickly through the air around them for a few moments before it settled to a stop between her and Kylo Ren. Thankfully she was able to sustain a patronus for some time, given it being used as secret communication for the Order, so she didn't feel like it was too much of a challenge. She smiled softly at the doe and then looked up at the man in front of her.