Gawain stepped in to accept the challenged. He chopped off the Knight’s head but it
magically reattached itself back to its body.
A year later he travels to the Green Knight’s lair where it is his turn
to accept a blow from him. When the
Knight strikes, Gawain only to evade the blow.
He goes home afterwards.
Probably because she found the tunnel for only her and her brother to explore and not for Frits which is probably why she changed her mind