Lamplighter distracts her before ultimately teaming up with The Boys to help alleviate his guilty conscience. In the comics, Mallory shoots him in the head. In the series, he offers up his life to Grace as recompense for what he did to her grandchildren. Frenchie convinces Grace that Lamplighter can help them.

When Hughie is tasked with “babysitting” Lamplighter, they learn Starlight is being held in a Vought containment facility after it was discovered she cooperated with The Boys.

Source: https://www.distractify.com/p/is-lamplighter-coming-back-the-boys