after defeating helping defeat cell and everything is calm (a little) you decide to train by yourself for a couple of years getting stronger. one day you decide to ask bulma to make you a device to help you train. as you make you way to capsule corp. you see vegeta leaning against the wall arms crossed and eyes closed when she see you and scoffs

Vegeta: tssk…you humans are just weaklings and now kakarot is dead i have nobody to train with. she says arrogantly and with aggression