What to call her..Selfish??

Well by now you must be knowing the peculiar problem I have..Coz of dependent SIL and over biased MIL(towards her DD) and the flow of problems that keep coming every alternate day..
I won't bore you all with what all is happening.I am trying to deal it as patiently as possible..
What left me speechless and shocked was to listen to my SIL.I don't know what happened between her and my MIL but this weekend when she was here,she was trying to be very close to me-concerned about me and all.Plus she kept saying how authoritative and dominating her mom is,how she wants to have her way and she is just waiting for the right opportunity to have her house to herself and her kids-she can no more bear her own mom and that she wants to stay separately form her mom asap.
I don't know whether this was a candid confession or just venting or a combined game of both of them or actually telling me that no doubt my MIL does everything possible for her DD(even if that means snatching from us),its the DIL who will have to take care of her in her old age-SIL won't do that..
But she sounded very selfish.I might have my displeasure about my MIL's biases towards her DD and making our lives hell to ensure all the luxuries to her,I felt bad that a daughter could think of doing this to her mom-especially when mom is fighting for her with us!!MIL sends every penny(pension,rental and all the money taken from sons)to her DD and also is giving all the property to her.My jewellery is gone to her..And we are sending her money for everything.
What do you think-is it pure selfishness and blabbering or some deep meaning I missed?

 

MIL generally stays with us.But goes to her sometimes.Its like-whenever we are in need,she'll go..Whenever we are planning a vacation-she'll come back.Whenever SIL needs her(or her money),she'll go..Its according to her convenience.
Right now,since I have a small daughter and I am looking after her all by myself and I have a new job and MIL doesn't get to play her tantrums,she stays with SIL on week days and comes with her every weekend..

I think,SIL is trying to make it clear that she cannot keep her mom with her in old age.And how its not her responsibility to look after her..
She kept telling how her mom never supports her etc..
Well she never had MIL or SIL,no in laws..
And now she wants her mother too should be taken care by DIL.(Her kids are grown up,she doesn't need her maybe)..All rights and more than equal status and zero responsibilities..

 

Haha YM,
She'll get an heart attack and run to her brother and mother accusing me of using violence on herlaugh1smiley

 

You are right Sunshine..Thats why I didnt react..But i was a bit confused.She is not naive to say such things in heat of the moment types.But I was wondering whether both mother daughter are hands in glove in this!