Thanks gals.
I do still have ds, but totally out of character he went down without a peep at 7:00, so it's been a very quiet household with no settling and re-settling and re-re-settling, as is usually the case.
I sms'd mum at 9:30 to see how it was going and she said B had only just gone to sleep, and in mum's bed, not her own (don't know where she will sleep now, but not my problem and at least she did go down).
Mum last messaged me "don't worry, relax, I looked after you ok didn't I?" - hmmm, have chosen to leave that alone and just say "ok, thanks, good night" lol.