Lam is among the 120 characters available for recruitment in Eiyuden Chronicle: Hundred Heroes. While she is one of the many straightforward recruits, a known bug may prevent players from recruiting her if certain conditions are met. Despite developers assurances of fixing the bug, some early access players still encounter issues with recruiting Lam despite attempting the standard method.
Source: N4G PC How to recruit Lam in Eiyuden Chronicle: Hundred Heroes