She’s a woman, not a child, after all - even if she is your daughter’s age. “When I was your age...” “Young people are so ____.” “Oh you weren't even BORN when this album was released.” “You were still a toddler in 1989?
E Yes, it's gross and it doesn't need to be pointed out. Don’t assume you know better Keep a check on your tone; is it supportive or patronising?
You’ve been on this earth for longer, remember, and you should have learnt by now that you deserve someone who is more impressed by the size of your heart than your wallet.
Furthermore, don't presume that you have to “take care” of her emotionally.
Similarly, if you're getting attached and she's planning on moving to Japan for six months, you should probably have a super-fun and not-at-all-awkward conversation about “where you see this going”.