And maybe Will fuck with all the love and respect
Nah, seriously, there is some quite small possibility that they'll fuck each others moms.
We're seeing only outer layers of MC's mother personality for now.
And she is human, she is woman, there are no angels here, so let's not make her some holy idol or smth, only cause she's MC's mom.
And even if Ian respects her and love her as mother figure, he's surely has crush for her and able to cross the line.
Game reminds us very very fucking often that there are no angels or demons, even if they act like one at first. (And she's not LI, it's not even netorare lol)