The 43-year-old actress, who played Lily Aldrin on the CBS sitcom, said the hour-long finale was cut down significantly during the editing process, which resulted in the abrupt ending, reported Digital Spy.
"It just seemed too quick. Obviously it was a tear- jerker, but with all the stuff that got cut out it was too fast. You're just like, 'Wait, what happened?!'
The actress added she did not think Barney (Neil Patrick Harris) and Tobin (Cobie Smulders) should have got married in the show.
"I liked Barney and Robin. But in my heart, I always wanted her with Ted (Josh Radnor). I just feel (Barney and Robin) shouldn't have gotten married."
The show went on for nine seasons from September 19, 2005 to March 31, 2014.