I had a bit of an internal debate - on one hand, not accepting will give her a little preview of what 1/17 will look like, but if that's been how you acted previously, that might backfire.
If she is dead set on moving out, I think I would go. And focus on having fun, smiling, laughing; as much as possible. But when 1/17 rolls around, I would say cut it cold turkey.
I think this is where I'm at Bippy. Keep things friendly and when she leaves go dim. GAL like crazy and if she reaches out evaluate at that point in time. Once she is gone she can have all the space to figure out whatever it is she needs to figure out. In the mean time I will continue working on myself and being a good example for my 3 boys.
Me:42 W:37 M:18 T:23 3S: 4,7,10 EA 6/16 ILYBNILWY 7/16 9/16 separate BR 10/16 Discernment Counseling She's moving out 1/17