You don't need to feel guilty about your wonderful art!
If people don't get it, it's their loss. I've lived long enough (65 plus 15 years experience:))that by now I'm not nearly as nice as most of you in my treatment of "well-meaning" relatives and friends when they attempt to tell me what I should be doing. If you're enjoying what you do, you don't owe your daughter or anyone else an explanation. Don't let comments like that keep you from living your life and doing what you enjoy....let them sort it out after you're gone!
rusty