It's seems to me that Barret adopted Marlene for 3 main reasons.
#1 Dyne was his friend. Wouldn't آپ consider taking in your دوستوں kids if he was killed?
#2 The town Marlene lived in was destroyed. She didn't have anywhere to go really. She knew Barret so it was almost their only choice.
#3 Barret felt constant guilt for arguing in favor for the Mako reactor and subsequent destruction of the town. Adopting Marlene would allow him the feeling of atonement for his transgressions.
#2 The town Marlene lived in was destroyed.She didn't have anywhere to go and She already knew Barret.
#3 Barret felt constant guilt for arguing in favor for the Mako reactor and subsequent destruction of the town.Adopting Marlene would allow him to feel a sense of atonement.