Trina got gifts from Dad as well! They were marked as from both of them, of course, but Trina can see her dad's influence. A gift card to the craft store, and a new tote for carrying art supplies! She suspects that Diane communicates with Dad because there are no overlaps, clothing and practical gifts from mom, and cash from dad, but both with feeling.
The gift card to a spa from Janice was well meaning, but how would JANICE know that Trina has dyed her own hair since she was 10? Though, she can use it for product, so it's not a BAD gift, really.