G8r, I think it would be great if you let her know that you will be there if she needs to talk. Maybe say something about we have been together for 10 years no matter what happens with us, I certainly care for your father and saddened to hear about his health. If you need a shoulder to lean on I am hear. If she chooses to talk to you about it then validate, validate, validate!!! But you cannot pressure her to talk to you. That has to be her decision.
As far as her speaking with you and then doing a 180, that the WW. Might have scared herself realizing how much she opened up to you, IDK. But we all know how fickle a species the WW is. Once this way, once that way!
Best of luck to you buddy. Life's a garden, dig it!
Me 41 W 33 M 2013 Suspect A 11/15 Confirm A 1/16 She moved out 2/14/16 Stepson 13 Stepson 16