What we can already see is that the MC's influence on the two girls is growing.
On the one hand, there is Emma: consider how well she coped with the issue surrounding Zak, her own attack and ultimately her mother's past. Little by little, the MC takes off Emma's "rose-colored glasses" and prepares her for the harsh reality.
On the other hand, there is Suzi: she and he think in the same regions. He can't control her temper but I think he will channel it. This makes her more balanced and sociable.
What helps, of course, is the fact that both are attracted to the MC and are therefore easier to "manipulate" (and PLEASE: in quotation marks!).
[EDIT] None of this will happen, no banana-eating Emma (sorry
Joshy92) or a Suzi in the Rambo cut (for the rest who would like that)!
This is just reality!