Yowch, that's certainly what you were looking to hear, In_it. But look at it this way, buying shoes and undies and then *telling* your mutual friend about it tells me she's looking for some form of external approval or validation for what she's done.
I mean, going to the gym or running is a way to improve your looks, sure, but it's also a healthy way to improve your mental health and self-esteem. But just going on shopping sprees is just a panacea that will give you a quick thrill but won't address the underlying issues. Which, as I see it, is your W's guilt especially as relates to you and your S.
I think she's got a real wake up call coming and she's going to be faced with the consequences of her actions. But rhat could take so time, so you'd better settle in for a long wait. Patience, as always, is key.
M41 W42 M 12 T 15 S10, D9, twin Ds 3 1/2 BD 1/2/2013 Living as roommates Working on D agreement w. mediator 5/13