I don't know if this has been asked on your other thread, but hsa your W been looked at re post natal depression(PND)?

Her behaviour is so erratic. PND can start quite a few months after the baby is born and go on for years. It can be very debilitating. It might account for the strange behaviour and also your W's inability to make her own decisions - letting her sister take control etc...

Just an idea.

Saffie

Saffie
me 46
H 46
M in 1986
D20,D18,S16,D13
H's A 01/05 to 07/06
H recommitted to M 07/06
renewed vows 09/06
Going from strength to strength