She wanted to marry Kṛṣṇa. So she sent one letter to Kṛṣṇa that this is the position. "My brother Rukma, he has decided to hand over to me to Śiśupāla, but I don't like. So please arrange for kidnapping." A brāhmaṇa was sent to Kṛṣṇa.
That is also another responsibility of kṣatriya. If a girl proposes, "I want to marry you," a kṣatriya cannot refuse, he cannot refuse. He must marry that girl, even at the risk of life. This is kṣatriya spirit. One rākṣasī, she wanted to marry Bhīma. So Bhīma refused, she was a rākṣasī. So she complained to Mahārāja Yudhiṣṭhira that I wanted to marry Bhīma but he has refused. And Yudhiṣṭhira Mahārāja compelled Bhīma, "You must marry. Even though she is rākṣasī, you are kṣatriya you cannot refuse." This was the system, very nice system, brāhmaṇa, kṣatriya, vaiśya, śūdra. Don't work now, you should hear. You cannot divert your attention.