More than 100 Palestinians had been killed in the Israeli bombardment on Tuesday alone, bringing the total past 1,200.
Doctors say Shaymaa was born two weeks premature after her parents were hit by a strike at their family home.
ECB cleared Ali to wear bands during third Test against India. Decision overruled by ICC match referee David Boon.
ICC investigating the matter as England batsman wears bands bearing slogans "Save Gaza" and "Free Palestine".