Natalie never felt dumped; she committed suicide out of grief after identifying Date's corpse at the morgue following his accident.
Because Takagi and Date shared the same first name (Wataru), and Natalie only referred to her boyfriend by that name to her parents, Fuemoto believed Takagi was the man who "dumped" her. Detective Conan Episode 681
Sato spectacularly rescues Takagi from the noose via a police helicopter, using her gun to cut the rope just before the bomb detonates. Natalie never felt dumped; she committed suicide out
Following the rescue, Sato calls Takagi "Wataru" for the first time and the two share a passionate kiss, marking a major milestone in their relationship. Natalie never felt dumped