Plan your own beach vacation. D means that she doesn't get to have everything the way it was. You mention "Maybe just feel a sense of loss like she is going to completely lose me." and then go on to talk about capitulating to her beach vacation demands. Don't do it.

D has consequences. Yes it would be better for D3 for her parents to stay together. But getting a D, and pretending that nothing has changed isn't the same thing. Start your D now while she is young to see that her parents are separate. It may help when she is older. It may not. Every kid is different.

M(53), W(54),D(19)
M-23, T-25 Bomb Drop - Dec.23, 2017
Ring and Piecing since March 2018