I adore Jason too, but do I agree with you. Actually, I would love for Selina and Jason to bond.
They have partly-somewhat similar histories! Selina's a strong role model for a kid who was in the streets in Gotham, and she could teach him one thing or two about Brucedickery and the necessity to see past the 30 years of emotional distress to find that he Cares, A Lot.
She would pwn Jason's reasonings so hard. Why won't you give us real Jason-Selina interaction, canon?