Vanessa

Amphibious. Vanessa can breathe air and water.

Evasion. If Vanessa rolls a Dexterity Saving Throw to avoid damage, she takes only half damage if she fails and no damage if she succeeds.

Sneak Attack. Once per turn, on her turn, when Vanessa hits with a Dexterity based attack, either rolled with Advantage or at a target with a (not Incapacitated) enemy of theirs within 5 ft. of them, she can add 6d6 damage to the damage roll.

Tactician. When Vanessa takes the Help Action to aid an ally, the range of the Help Action is 30 ft.

Dagger. Weapon Attack: +9 to hit, reach 5 ft. or thrown 20/60 ft., 1 target. Hit: 8 (1d4 + 5) piercing damage. 

Hand Crossbow. Ranged Weapon Attack: +11 to hit, range 30/120 ft., 1 target. Hit: 9 (1d6 + 5) piercing damage.

Crossbow Expert. After taking the Attack Action on her turn, attacking with a one-handed weapon, Vanessa can make one attack with her hand crossbow as a Bonus Action, provided it is currently drawn.

Cunning Action. Vanessa takes either the Dash, Disengage, Help, or Hide Action.

Uncanny Dodge. After being hit by an attack, Vanessa can half the damage she takes from this attack, provided she can see the attacker.