You didn't put her in any position here. She planned the trip with the kids, you pointed out that it was an error in judgement, she agreed and now she has to deal with it.
The resentment comes with the territory but the sooner you separate the past from the present, the sooner she will.
I guess I am saying that she needs to work through her feelings of resentment and process and I don't think you can make up for the past by trying to make it easier for her now in a sitch she created (the weekend). That's just my opinion. It is an unhealthy dynamic. Either she will see your changes and believe you and want you or she wont.
