can someone tell me the title of this manhwa i saw on youtube shorts. i think its abt this...

can someone tell me the title of this manhwa i saw on youtube shorts. i think its abt this mother/daughter duo where the daughter ensures her mother lives a happy life. i think the daughter was also prepared to say goodbye to herself because her mother being happy means she wouldnt be born and wouldnt exist. but in the end her mother ensures her daughter would still be born or something like that