IMO, BD's reaction on the NG Show seemed to imply (to me) that BD was blowing off what she was hearing (i.e. what I mean to say is that, IMO, BD's response seemed to imply that BD felt that her MIL's claims about SA lurking outside HD's bedroom door was *pulled out of her hat*, so to speak). MOO & double MOO.
Question: If a mother & daughter share a close relationship, and if a daughter feels she can come to her mother with her concerns, fears, feelings, etc., then WHY would a mother claim to be so in the dark about something as important as how her daughter feels about her live-in BF (especially since it now appears that several others were also made aware of these fears & feelings)?
Answer: Either HD DID come to her mother with her concerns, fears, feelings, etc., and was blown off, which then would have compelled HD to turn to other trusted family members or friends; OR perhaps HD & BD do not share a close relationship (for whatever reason) which then would STILL have compelled HD to turn to others who she trusts with her concerns, fears, feelings, etc.
Bottom line: Apparently, HD HAS talked to others about her fears & feelings regarding SA.
Even if it's true that HD never approached her own mother with these serious concerns - BD needs to ask herself "Why?", although this may be an extremely uncomfortable question for BD to ask herself.
A mother is the FIRST person a daughter turns to for help & protection.
If that doesn't occur - well, IMO, that's the biggest red flag of all.