Eight persons D, M, P, B, R, S, T, and N are related to each other and were born in the years 1952, 1956, 1962, 1981, 1984, 1987, 2014, and 2017 respe...

Eight persons D, M, P, B, R, S, T, and N are related to each other and were born in the years 1952, 1956, 1962, 1981, 1984, 1987, 2014, and 2017 respectively. The ages are calculated as of the year 2023. Given the following clues:

• N is the nephew of M's spouse.
• The difference between the ages of N and N's mother is a multiple of 10.
• M's uncle's age was a prime number but he was not the oldest.
• The difference between the ages of D and D's son is a prime number less than 30.
• The difference between the ages of B and B's mother-in-law is a multiple of 5.
• The difference between the ages of B and B's only sibling is one-third of N's age.
• M has a son and no sibling.
• M's uncle is not D.
• S is not married to B.
• M has a father.
• D had no sibling.
• P is the paternal grandmother of M's only son.
• P is the grandmother of T.
• M's father has no sibling.
• Gender of M and N is the same but different from S.

Question: Who is B's mother-in-law?