[X] Don't budge. Appearances can be deceiving, as you well know.
-[X] Ignore it. It seems to be working just fine for everyone else.
-[X] If Mami notices it, do not hide the fact that you've never seen such a creature. Your instincts are distrustful; psychics are not to be taken lightly, with what you know.
[X] Equip a Persona which anulls or repels psychic attacks if this can be done subtly, just in case.
Kyuubey might rat that we're not a normal magical girl, but I like the idea of being aloof and mysterious to Mami fucking Tomoe of all people. The incubators rarely act so directly as to bring their true might to bear, so I doubt we'll need to do anything more than be vigilant against infiltration attempts unless we start attacking the obligatory giant hidden evil alien space station.