Is a woman who sends nude pictures of herself to someone online considered an adulteress, and is she worthy of marrying a righteous man despite her feelings of guilt and remorse?

Love relationships between young men and women are forbidden, including conversation and sending nude pictures. This falls under the metaphorical fornication which the Prophet, peace and blessings be upon him, called the fornication of the eyes, the tongue, and the hands. However, as long as you have repented, there is no blame upon you, for repentance erases what came before it, and the one who repents from a sin is like one who has no sin. The description of fornication is removed by repentance. You must conceal yourself and not inform anyone of your past transgressions, and be keen not to return to forbidden relationships.