How I Met Your Mother Finale: Ready your tissues as Alyson Hannigan, popular for her role as Lily Aldrin in the hit sitcom How I Met Your Mother, shares her thoughts about the upcoming season finale.

According to her, the filming of this final season made her really emotional, but she eventually managed to keep it together as filming this final season made them very busy and took most of her and the other cast's focus.

"You know, I think I did most of my grieving at the end of the season because now I feel like, 'Oh, that was great!' This ninth season was shot around so many different schedules, and it was such a weird season that it was almost like our methadone," she explained. "It was a nice way of getting used to not seeing everyone every day of the week. So it prepared us for the finality of it all."

According to webpronews.com, the finale is set to air on March 31, and Hannigan said she would be watching the episode from the comfort of her home due to her having to film a pilot that day. She said it was probably best that she stay home because she would probably get very emotional watching the show finally come to its conclusion. "... all the blubbering I'll do, I should probably stay at home," Hannigan said. "I shouldn't be out in public."

Fans are eager to find out about the mother's status. Some believe that she has been dead all along, but Hannigan wouldn't confirm the rumor. "We could all be dead. Who knows? But I just love that even though it's only [two] episodes left, people are still trying to figure out the end. As Barney would say, wait for it!"

The only thing that Hannigan would say is that the episode will definitely be a tearjerker. "I killed a lot of trees with my crying," Hannigan revealed on Jimmy Kimmel Live! on Tuesday. "99 percent of the room was crying. That's executives and everything."

Watch the interview here: