Is it normal that my 10 week old girl smiles a lot at me for a month now, but not at all at her dad (or anyone else)? He is back to work but she still spends a lot of time with him, in the evenings and on the weekends. I’m a bit sad he didn’t get a smile yet, especially because she’s been quite a demanding baby (restless sleeper and fussy during awake times due to colic) and he’s investing as much energy as I am into taking care of her. Anyone else experienced this?