Question: how will rey get a new lightsaber?
Answer: Though Rey retrieves it, it's later taken from her by Supreme Leader Snoke, only to have Kylo Ren turn the weapon on Snoke himself. ... (And no, it's not the double-bladed red lightsaber that Dark Rey wielded, though that was badass.) It's revealed that Luke trained Leia in the ways of the Force in the past.