-She blocked with her arms- After all... Asgore, once said he ONLY NEEDED ONE SOUL, to cross the barrier... He never did cause of what happened to their children... Toriel, left him cause he wanted cold hearted revenge... Undyne, was never really signed a actual level of power... She along with everyone else never even realized it... Sides if you got to the ruins and went to the place humans fall you could easily climb out as there is no barrier there...

Description: Credit to, Grim, for the sprite | -Terrie | Name: Mitzi | Species: Protogen | Sex: Female | Stats: Hp: 15,000 - Def: 400,000 - Atk: 90,000 - Height: 9" 8in or 294cm - Weight: 485lb or 220kg | Themes: https://www.youtube.com/watch?v=8tIolNjmRM4 - https://www.youtube.com/watch?v=YzLjeLNT56U [1] - https://www.youtube.com/watch?v=IRkWdPFk4AQ [2] - https://www.youtube.com/watch?v=t8e-aqwMykw [2.5] - https://www.youtube.com/watch?v=8Amw2kMHmpg [3] - https://www.youtube.com/watch?v=qVxw3T8ECw4 [3.5] - https://www.youtube.com/watch?v=Lnr-cUQx7_o [4] - https://www.youtube.com/watch?v=uA2Eh0yjbZ4 [4.9] - https://www.youtube.com/watch?v=S07NA6GAQ_Q [5]