I agree - she is just too young to get it. As long as you're present, she's going to want to interact as normal. If there's someone else who can pitch in, I would be pretty unembarrassed about hiding out in the bedroom and staying there. Otherwise, today is maybe a day for tv, and stories. Or toddler games like "I'll lie on the couch and time you while you run to the other room and back." Or batting a ball back and forth across the floor and calling it catch.