Yep. Same here. I cook nearly daily for everyone regardless if step is here or not, do the mental labor for making a weekly food shopping list (my bio is here full time), make sure I'm going to be cooking things SK will generally eat when she's here. Sometimes I clean up toys/the living room that becomes a mess when she's here, sometimes I watch her if husband needs to run to the store/mow the lawn/deal with work. But generally, I do no discipline bc I parent differently than he does and it made me mad being overruled, I don't put her to bed because she's here to see dad, I don't track her medications, appointments, school plans, because her mom does that and tells my husband. I already did all that for my bio young adult. I love her (step), she's always welcome here. But I work a LOT and I didn't sign up to be mom 50% of the time, I signed up to support my partner.