The more you reject her it seems like the worse you become at it and she is put off.
I think it would help grease the wheels for your xmas plans also by accepting an invite. She might start thinking you dislike her as a person.
By all means get Sandi's input first if you want it.
M36 W31 S4 S2 T5 M4 BD Jan12 S July12 Recon Sep12-Nov12 ILBINILWY Jan13 OM x 2 in 2013 W wants R July 13 I start D. Jan 14. Meet GF Nov 13 Have I changed enough? Jul 14