After Helping My Three Younger Brothers Escape Their Merman Forms, They Regretted It

I am a princess of the merfolk. Eighteen years ago, I saved three boys who had fallen into the water. My mother exhausted her life force to transform them into merfolk. For eighteen years, they respected and loved me, and everyone teased me about which one I would choose as my husband. But one day, all three suddenly came to tell me, "You've made us live like neither human nor monster all these years. Now we want our human bodies back." I was utterly confused, but after seeing them protect a human girl, I spent half my cultivation to transform them into humans. My maid Lan Zhu suddenly burst into tears, her tears falling like pearls. "Princess! The Dragon Clan's Crown Prince has sent another..."