I took Victorias words and Teds comment “And sure enough, she was right. It didn’t work. We just didn’t realize it yet.” indicate that it is Barney's and Robins wedding. We know that Ted meets the mother at Barneys wedding, why does he meet her at Barney's wedding? Because he can no longer delude himself that he is going to end up with Robin as she just got married to one of his best friends, Barney. The wedding of Barney and Robin brings an end to the 'love triangle' and means that Ted can find his true love (who I think is Barney's half sister) at the wedding.
Anonymous
I took Victorias words and Teds comment “And sure enough, she was right. It didn’t work. We just didn’t realize it yet.” indicate that it is Barney's and Robins wedding. We know that Ted meets the mother at Barneys wedding, why does he meet her at Barney's wedding? Because he can no longer delude himself that he is going to end up with Robin as she just got married to one of his best friends, Barney. The wedding of Barney and Robin brings an end to the 'love triangle' and means that Ted can find his true love (who I think is Barney's half sister) at the wedding.