Innate Spell Casting. The nymph's innate spellcasting ability is Charisma (spell save DC is 16, Spell attack modifier +8). The nymph can innately cast the following spells, requiring no material components.  

Magic Resistance. The nymph has an advantage on all saving throws against spells and other magical effects.   Aquatic spirit. The nymph can breathe water and walk on it.   Natural Goddess. Nonmagical animals are automatically friendly towards the nymph. Fey and nonmagical animals may come to her aid if she ever needs help.   Blinding beauty. Beuty of the nymph is beyond mortal comprehension and can blind anyone who gazes her. All creatures in 30ft of the nymph must make charisma saving throw DC 16, or be blinded permanently as through blindness spell. A nymph can suppress or resume the effect as a bonus action.   Unearthly Charm. The nymph may target all humanoids or beasts within 30 ft. who are able to see the nymph, or focus the effect on one target only. If the target can see the nymph, it must succeed on a DC 16 Wisdom saving throw or be magically charmed. The charmed creature becomes infatuated with the nymph and will protect her from any threat, do their best to fulfill every favor the nymph asks of them, as long as it is not entirely contrary to their nature. Each time the nymph or her allies do anything harmful to the target, it can repeat the saving throw, ending the effect on itself with a success. Otherwise, the effect lasts for 24 hours or until the nymph dies, is on a different plane of existence from the target, or ends the effect as a bonus action. If the target's saving throw is successful, the target is immune to the nymph's unearthly beauty for the next 24 hours.   If the nymph concentrates on only one target at full force, the effect is potentially lethal. The saving throw DC becomes 18. Result of the target's saving throw.