She "just" got out of a relationship?

I would just continue to be friends with her for now, and then ask her out to dinner again in a few months like she mentioned (provided things are going well). From the way it sounds she IS interested, but is hesitant to enter a relationship. The more you mention it, the more pressure she may feel and that could turn her away. If continue to be sweet, she will probably find herself looking forward to you revisiting the subject of a date. Good luck!