As far as her stance on relationships goes, what she says here seems, to me, to be ambiguous. It doesn't necessarily indicate monogamy as "being in a relationship" could mean a relationship with more than one person. "Seeing others" is therefore a broad, general term for seeing anyone outside the defined relationship, so if it were a committed relationship of 2 or even 3 people, going outiside of that to see someone else would be "despicable". She might not mean it that way, but then again, we don't really know for sure what her stance would be on a poly relationship, therefore this statement, until we find out otherwise, could be taken as a more general statement about stepping outside the bounds of an established relationship.