Final answer:
Matilda's mother's reaction to her being missing is not provided in the text snippets given; therefore, we cannot state how she reacted, and the correct answer must be that her reaction is not mentioned in the text. The correct answer would be D) Her reaction is not mentioned in the text.
Step-by-step explanation:
According to the provided text, Matilda's mother's reaction upon finding out that Matilda was missing is not clearly stated. None of the passages given show a direct reaction from Matilda's mother about Matilda's absence. Instead, various women's behaviors and reactions to other stressful situations or news are described, showing signs of irritability, grief, or shock, but these instances do not pertain to Matilda's mother and her specific reaction to Matilda's disappearance.
One can infer that if Matilda's mother had a reaction similar to the ones described, it could be a range of emotions from upset to distraught, but since there is no direct reference to Matilda's mother's reaction to her being missing, the correct answer would be D) Her reaction is not mentioned in the text.