Final answer:
The exact amount Moira loaned DeeDee is not provided in the text snippet. The reference to two hundred and fifty pounds revolves around an emergency cost, and it is undetermined if it is related to the loan itself.
Step-by-step explanation:
Based on the conversation snippet between Nora and Mrs. Linde, it appears that Moira loaned money to DeeDee to cope with an emergency. However, the exact amount that Moira loaned DeeDee is not explicitly stated in the provided text. Nora mentions a substantial sum of two hundred and fifty pounds in relation to an emergency, but it is unclear if this is the amount loaned by Moira or just a reference for comparison. Mrs. Linde acknowledges the necessity and benefit of having money available for such unforeseen circumstances.