Same night she's over for dinner. H is off repairing our fence in the farthest part of the pasture of course. I'm barbecuing and MIL is watching. So, I try to make small talk as best we can manage and ask about SIL expecting another baby.
Me: "So, SIL is having another baby, huh?"
MIL: Shrugging her shoulders, "Noooo?"
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Me: SIL didn't tell you she's having a baby in January?"
MIL: "En janeiro? No se" and added that SIL hasn't said anything to her.
H comes back, and just in case MIL isn't understanding me, I ask him to ask MIL. She still says no. So, I'm all WTF and thinking SIL has finally lost it is going to steal a baby in January.
I ask H to specifically tell MIL that SIL told me about the pregnancy and that she had told the rest of the family. MIL still denied knowing anything about it.
I let it go for awhile, but I just had to ask one.more.time. So, I say to H, "It's really weird that SIL would say she's expecting, and say she told your mom and dad." H, asked MIL again and this time her story changes, "Oh she did say something but I thought she was joking."
WTH? Why didn't you say that from the start and why would you think she was joking?
After she left I asked H, "What is wrong with your family?"
"Feck I don't know."
MIL is thrilled you're joining the family.