"who's that?".
Oops.
He knows who she is, by name iyswim. But we see them maybe once a year. We never visit them because they are always doing things at weekends, they have football season tickets/they both travel for work/spend a lot of time with BIL's family and BIL goes to gaming conventions/races his sports car etc. So occasionally they visit us but it's always on their terms and very rare. And when they do ds gets on fabulously with BIL but he really doesn't take to SIL because she comes in and tries to be the auntie and bosses him around/tells him what to do which realistically she isn't because she has no relationship with him.
She has no maternal instinct, she just doesn't do children which is fine obviously. But she claims that she wants to be a good auntie and if she knew ds didn't even recognize her from a photograph she would cry and be very upset and would then claim it was our fault.