Frank

it sounds to me like she wants to be needed.

she only offers to do stuff when she knows she will be loved over

i mean

i get all mushy when I am sick and my mom makes me soup
or
when I see someone is overwhelmed and I help out and then they thank me profusely

it just sounds like she wants to be gushed over
which would explain her anger when the elder daughter said she didn't want to go out to eat

if it was really just mom love she would have made supper for them both
and
if she was really about mom love
you wouldn't have asked her if she was making supper for D17. You would have known she was

does that make sense