It is completely understandable that you feel uneasy about this. I think it is really important to have a calm, direct conversation with her early on to set clear expectations, like always passing baby to you first when you are present, keeping phone use to her own break time, and following your preferred cleaning routine.
The phone and earbuds thing especially can be a safety concern with a newborn around, so that one is worth addressing firmly but kindly. Better to sort these things out now before habits get too set in, and your comfort and confidence as the parent at home should always come first lah