Drive-by Bills fan here... offering random thoughts/possible misperceptions... hope you can piece it together & some of it is helpful
It sounds important to you that your daughter have the opportunity to bond with her cousin & yet didn't mention the importance of your own relationship with your sister. Sounds like you're from a small family & trying to forge what bonds you can... totally cool and good luck with that.
Personally, I have siblings & cousins I adore, and siblings & cousins I'm less tight with... cue 'That's life' on the jukebox
Cold people suck... literally
Many of the more successful people I know bury themselves in their pursuits to mask a lack of reasonable fulfillment in thier personal lives
Many of the less successful people I know need to get their chit together and realize they're even more worthwhile than they've underestimated
some of us belong where we are...
and of course, success has very little to do with income, so give that up, please
Is it possible your sis and her husband adopted to help resuscitate a failing relationship? Is it possible that she needs help/advice from someone she trusts? Could it be your time to step up to bat? F that she's older... 38 is an age where you're old enough(actually ancient enough) to know some things...
(I'm ancient too)...
While you may be her younger brother, you did let her become a yuppie... now what're you gonna do about it?!!!
Seriously, good luck & at the very least I hope you can help facilitate the cousins becoming buds...
methinks you're gonna have to man-up and tell your sis to go F herself at some point in order to make that happen, though.
Cat