The author is really desensitised about yandere huh. It's pretty bad that the brother has to suffer with someone stalking and using dangerous methods in order to "obtain" him.
WTF is this shit. The author is just... she's so used to yanderes, eh? OK, let's put all of this asides as this is clearly at comical levels at this point. So guys, let's ship Eliza with the older brother. Since they both seems to be on the extreme side of things