This is from a fanfic of S.Meyer's Twilight (The Lion and The Lamb - Alphie). Esme is the mother of the teller (I).“In all fairness,” Esme noted, “you haven’t given any of us much of a chance to spend time with you lately. I, for one, treasure your company very much. I wouldn’t have been so insistent upon you staying with the family had I not enjoyed having you here.”
I do not understand the bold sentence clearly. I know it's a conditional sentence, but could you explain the meaning of this?
I'm confused with the phrase "be insistent upon you... enjoy having you".
Thank you very much.