Sleepless. The songmother doesn’t require sleep.

Multiattack. The songmother makes three clawed wing attacks. In place of two of those attacks, she can use her Mother’s Embrace.

Clawed Wing. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 19 (3d8+5) slashing damage.

Mother’s Embrace. The songmother embraces one creature charmed by her. The creature takes 32 (5d10+5) piercing damage, is grappled (escape DC 12), and is no longer charmed by the songmother.

Song of Oblivion. The songmother sings a magical melody of despair and loss. Every humanoid and giant within 300 feet of the songmother that can hear the song must succeed on a DC 15 Wisdom saving throw or be charmed until the song ends. The songmother must take a bonus action on its subsequent turns to continue singing. It can stop singing at any time. The song ends if the songmother is incapacitated.

While charmed by the songmother, a target is incapacitated and ignores the songs of other harpies and songmothers. If the charmed target is more than 5 feet away from the harpy, the target must move on its turn toward the harpy by the most direct route, trying to get within 5 feet. It doesn't avoid opportunity attacks, but before moving into damaging terrain, such as lava or a pit, and whenever it takes damage from a source other than the harpy, the target can repeat the saving throw. A creature takes 5 (1d10) psychic damage whenever this saving throw is repeated. This damage does not trigger a save. A charmed target can also repeat the saving throw at the end of each of its turns. If the saving throw is successful, the effect ends on it.

A target that successfully saves is immune to this songmother’s song for the next 24 hours.

Flight of the Lost. When an attack misses the songmother, she can fly up to half her flying speed without provoking opportunity attacks.