So, is it true? Is she really Roy's mother, or is Watcher just BSing?
WatcherCCG said:
She can be, as one of three women Eliwood (Roy's father and canon parent) can marry. But it effectively kills her since Roy's mother is dead as part of his backstory.
There is no definitely canon pairing, but even then it's generally less popular as an ending than Eliwood being with Ninian. It's also popular for Lyn to wind up with Hector, which would make her Lilina's mother.
Considering she's in her native garb, it's even more likely that she's together with Rath, which would make her child Sue...