I believe he did more than watch, like maxwell who partook.
Too many pictures of shittyface holding his daughter closer than an adult to a minor should/would do. Too many hands on her hips and such. She's on his lap numerous times. It's like he's flirting with a girlfriend. He's flirting with his own daughter? Even in the last 10 years when ivanka is married to that asshole and shittypants is meeting her and he has to put both hands on her, there's like at least at 3 I've seen where his hand is closer to her ass than her waist.
All the family portraits and weddings and get togethers for clients as well as reunions where relatives hug and stuff after not seeing someone for a year... etc.. I don't recall seeing any of that close clingy posing while working and even doing private sittings.