User blog comment:MoiraV/Case 47: One Wedding and a Funeral/@comment-24032096-20131114191815/@comment-12176464-20131115150002

Deicing fluid was used by replacing the normal fluid with a fake one so that the plane crash.

And the reason of murder is that Lola was giving money to Esteban to keep him afloat, but when she met Fairbanks, he sort of opened her eyes regarding her brother and asked her to stop giving him money, which she did. Esteban was furious that he wasn't getting any more money and therefore decided to kill him. He said he wanted to protect her as Fairbanks was known to "use" his female lovers just like toys and got rid of them after getting bored but the real underlying reason was just that Lola wasn't feeding his lazy self any more.