Their location yesterday was an old nesting spot for a gang of stray beasts. As they had Elvis and Wabei on their side, they naturally did not fear any stray beasts.
However, most of the stray beasts were bloodthirsty and would attack them with no regard for their own lives. They totally did not care about the vast disparity between their abilities and that of their opponent. They just hankered after a bloody massacre and the ensuing release.
Since they already had a death wish, Gu Mengmeng naturally did not care for them.
But she was unwilling to witness such foul killings.
Hence, she had Lea go hunting and sent those little snakes along for protection.