A word for raising your voice (not shouting/yelling)
- she bellowed from the living room. [strong, in a deep voice]
- she sang out from the living room. [loud but easy to hear]
- she trilled from the living room. [like a bird]
- she called out from the living room [loud but not shouting, commonly used]
- she intoned from the living room [to utter in singing tones]
- she urged him from the living room [to encourage, slight anxiety]
Sorry, I am not going to do the dictionary thing today.
You should choose a word that matches the mother's personality.