"Blue Thread" isn't anything you pay for. As a Wyndham timeshare owner - you are entitled to a status match into the Wyndham Rewards system - at VIPP it'll give her Diamond status automatically in the Wyndham Rewards hotel rewards system. Absolutely nothing that requires a purchase - she already has entitlement to this benefit - sales is simply using a FOMO sales tactic to try and get her to buy more points here. She could use the Wyndham Earner's rewards credit card to build up WR points faster if so desired (this is what we do for example). Again, no purchase necessary.
Regarding the TravelUp program - in our view here on the TUG Wyndham forum, to date, that's not worth the paper it's printed on. We've had repeated feedback now that the TravelUp pricing available for rental cars, airline tickets, hotels, etc., is no better than pricing you can readily obtain via various travel websites such as Expedia, Travelocity, Trivago, Kayak, etc. In fact in many cases the pricing is worse. It's certainly not worth what Wyndham says its worth - not even close. If you happen to get it as part of a developer purchase for other legitimate reasons - that's fine - but considering a developer purchase solely for any of these minor perks is not ever something we would recommend based upon our data from existing feedback mechanisms.