I suddenly realized that: if Mundy pulled the trigger(in chapter 61) and killed Lucien, it would be a terrible trauma not just for Mundy, but also for Perle. She was on her papa's lap when Mundy was aiming at him, right?
Oh and what would happen to Mundy if he decided to pull the trigger? I mean, did Lucien already asked Dr. Ludwig for his mother before chapter 61? He would be absolutely devastated if he finds out that it was Lucien who made his mother healed, but he killed him with his very own hands.
Someone has been cooking here, as the cool kids say nowadays!
I had not thought about the "collateral" damage of Mundy shooting Lucien with Perle on his lap, terrible oversight! That's what happens when you write without drafting anything, kids!
And to answer your second question, yes, in my mind, Lucien had made his arrangements before moving into the crappy motel and waiting for his beloved to shoot him. Yup, Mundy would probably be devastated learning this but from Lucien's perspective, he wanted to do whatever he could to "correct his mistake" and let the bomb blow and throw Caroline in a coma. So he figured the one thing he could do was let Mundy kill him as revenge, and leave whatever money he had to Ludwig's research to help Caroline out of her coma.
This is tying knots to my brain and usually my stories are easier than this to read, apologies for the headache caused by reading this! ^^