In the soft morning light, her cheeks had a warm glow that made her look particularly radiant.

glow 是名词，指"温暖柔和的光"或"红润的光泽"，常用来形容皮肤健康红润的状态。这个词也可以作动词用，表示"发出柔和的光"或"容光焕发"。