jmorth,,I don't know ? I will look again . It is going to bloom again , I will have to catch that in a morning when I can ,
a couple more photo's of the plant ,
jmorth) silene Vulgaris ,it could be ,, your correct
The leaves are heavier than most suggested , I need to see the bloom better to be sure , it looks a lot like the "silene family " or catchfly pinks ,, also