If she ever comes a dinner time, could you ask her if she'd like a plate? Some way of seeing how she will react to an invitation to stay a bit? Ask her opinion on something you are doing in the house, maybe to pick out a paint color or something? Ways to get her involved without pressure.
She probably did want you to see how nice she looked when she dropped by, and she did look at you in THAT way, but moving too fast on your part in that direction could set you back. I agree that with neither of you moving if you both are feeling THAT way, because each is waiting for the other to move is hard on you, but it has not been a long time in your situation, so a bit longer while you keep building up your friendship is not going to hurt. She knows how you feel about her. She knows you want to get back together. Try not to get ahead of yourself.
