No, I don't think that is likely. We know that Roshone didn't want to give up the political conecton, also we see no hints of Amaram being married and he doesn't seem like the kind of guy who would get married, especially to a young remote fairly unimportant girl. Everything Amaram does is to try to improve his position.
It is possible for Kaladin to get their and and have no one recognize him, including Roshone, he might walk up to Roshone's House, sneak in to kill the Parshmen he has, and bump into Laral, not recognizing her, and Roshone. He may confront Roshone and perhaps not recognizing Laral (it has been several years) fall in love with her again.
Basically what I'm saying is that it's not out of the question.
I think that since Roshone wanted to marry her it almost certainly happened, however it was probably not something that Laral was to happy with. This leads me back to one of my first questions, could something like that cause her to break, attract a spren and become a radiant. I think it's just the Ironic type of thing that Brandon would do, Maybe have Kaladin torn between two Radiants,
and Laral.
remember this is all speculation on my part so it's great to have some other opinions to go along with my own.