Do a google search and find out what clubs she belongs to. No breeder with a "stellar reputation" would need to mention posts on any forum as a boost to reputation. Furthermore, the posts could be plants... did others agree? Well known "stellar" breeders are known by other breeders. Also " said the litters "... how many litters?
It could be a death in the family, sudden illness, something. But at this point, if you see nothing in her local news, it's time to contact the local breed club. Say you are concerned, wonder if someone knows if there is an issue. Or send to Pat who will pretty instantly know if you've hooked up to a scam or if there could be some legit issue. I just can't imagine it though. It takes about 5 minutes tops to email the litters status and explain if she won't be in contact for a week or so.