No because it's the way Lockwood and Lucy both parallel each other's pasts.
Like, Lucy being used by her mother to make money. Lockwood (although he later apologizes) calling her an "asset". Lucy watching most of her friends die and her best friend getting ghost-locked simply because they had underestimated the Visitor and weren't prepared. Lockwood forgetting to bring the chains and then underestimating Annabel, saying that they don't need chains to deal with her.
And then Lockwood seeing Jessica in Lucy. Lockwood seeing Lucy caring for him, helping him and making him see reason and being reminded of Jessica. Lockwood thinking that Lucy was Jessica for a split second after he woke up from being unconscious. Lockwood seeing Lucy lying on the floor in a room filled with sources and remembering what happened to Jessica.
They find the most traumatizing parts of their pasts in each other but it's different now. It's different because it's part of the healing process. They're helping each other and they're healing and it's going to be okay because they can get through it with their love for each other.