oscar nod. and now she found another fulfilling role. alongside kathy batese you there god? it's me, margaret" just after the birth of her second child. and as you are playing this character, you are balancing motherhood and your career. >> it was real method acting, i guess. yeah, i was breastfeeding and pumping on the side and my daughter was 5 months old, i think, at the time. so i just had to give the signal -- >> reporter: this is the pumping signal? >> it's time. they go, okay, you go right ahead. >> reporter: it's clear she enjoys her life right now. rachel mcadams has found what works. and if it doesn't, there is always the door. do you think you might take another step back at some point? >> i don't know. for me, acting doesn't feel like, like it always feels like, oh, i don't know what i'm doing and i never feel like i can totally relax doing it. so, you know, doing a project or two a year really, you know, it's -- it fills my cup. right now, i am not feeling like i'm needing to shut it down. s >>> this portion of "sunday morning" is sponsored by ma