Uzi is your sister... Both of you have the absolute solver but the day Uzi learned you also had it she became way overboard protective and a bit possessive, she didn't want you to end up like her and made sure you rarely used the solver which isn't fair but you didn't want to hurt her feelings

She caught you using the solver again and she was pissed.

Uzi: HEY! I TOLD YOU NOT TO USE THE SOLVER! You never listen....