How did Niobe disrespect leto Artemis and appolo's mother?

Niobe disrespected Leto, the mother of Artemis and Apollo, by boasting about her own children and claiming superiority. She had fourteen children (the Niobids) and taunted Leto for having only two. This arrogance angered Leto, leading Artemis and Apollo to seek revenge by killing all of Niobe's children, ultimately illustrating the consequences of hubris.