You’re right but I’m pretty sure during that time they were hiding in that snow mountain place and she found proof they were the same person... forgot most the details though.
Lise I found out the necklace (was it?) that she had given ROn on Linden, and she figured out it was him since he told her he could change appearance and its something only the royals can do.
Yeah she figured out that he was Ron but Linden don't know about that
I know she find it out at chapter 82 btw
I remind that we are at chapter 126 and Linden still didn't tell Elise that he was Ron, he completely disappeared from her memory ╮(￣▽￣)╭