A lot of the times when Affair Partners get engaged or marry, they tend to try to legitimatize their R by assigning labels as if everyone was okay with their relationship and accepts it. Also about the obit, it is all how she presents herself and her 'family' to outsiders. Appearances are terribly important to them....because they know what they did was wrong.
That is why you see a lot of the OWs/OMs post pictures of them with the LBS' kids on FB and other social media. As if Jabba the Hut can make himself more cuddly by posing next to the LBS' kids. Crraaaazy!
