Regardless of what she says I would tell her that you understand how she feels but that you need some time to think about it.
The last time the D word came up (7/30) at my house, I told my H I understood how he felt, which made him even madder and he told me I did not. I would definitely not commit. Maybe saying I understand that you feel that way or I apprecaite that you feel that way would work.
M44 H57 D17 (special needs) M 18 yrs Bomb 7/2/12 Still living together
