For instance, no one here mentioned the double fake name theory the gang thought Victoria used at the wedding, since there was no Victoria invited (this was later proven false, as we all know). Once the kids heard that their mom was a stripper, this might have rushed through their heads, meaning that they would have reacted even though their mom isn’t named Tracey.A different theory, first pointed out by JuliaJolie, but then forgotten, is that the kids might have thought that Tracey was their biological mom, and that the person they see as mom, isn’t actually their mom, and therefore, the mom wouldn’t be called Tracey.On the other hand, future Ted doesn’t remember everything, as pointed out in other episodes, so the chance that he remembered both names of a stripper who hasn’t mattered in his life is fairly small. This could either mean that he remembered hee name because it turned out to be the same as his wife’s, or that he just told the kids this was her name (remember, he messing with them), both this would mean that the mom’s name is Tracey.Anyway, that’s just my thoughts.