I am only responding because I don't think the doctors are where they need to be on MRSA, I don't think they have yet figured out exactly what causes it.
So I wanted to let you know our experience with it.
My family lives an hour away and my brother used to get MRSA a lot, so did his daughter. When I say a lot it was nothing for my niece to have 8 or 9 at a time. My brother either. Then my nephew started to get them, lived next door to them. My mother is not the cleanest person. Yet she never got one, my Dad never got one,my SIL never got one, my other brother never got one and two of the other kids never got one. The ones that did kept them for a little over a year, they would go away then come back. Here is how they live: well water from a shallow well, not very clean people (they don't wash hands very often or sterilize anything).
Now let me tell you about the family down the street.. This is how this family lives: they are clean and looking at them you would think higher middle class. Her son got one and then it spread to her other son, neither parent ever got one but they too kept them for a long time, a little under a year. When they would get one she would clean the tub out with bleach after every bath, sterilize the house, use the nose meds for every person in the hosue, and
antibiotics for the ones with MRSA.
So I don't know how it spreads.. But I don't think it has to do with cleanliness.
Then one day my son got one so I carried him to the doctor and he lanced it and sent us home with meds. Next day he fell and it caused the infection still in there to pop up into another bump so I carried him to the ER, they hooked him up IV
antibiotics, he was allergic so they gave him benedryl, he was allergic, they knocked him out. Next day they carried him in to surgery and cleaned the whole thing out, yes surgery. He had never had it since, 5 years ago.
Then in January I came down with MRSA on the inside, no visible sign on the outside until I got up hurting by next day I couldn't move, they thought I would not be able to walk again at first. Never had surgery , had not been in a hospital for any reason, so they have no clue how I got it. They did say it can happen to people who get MRSA over and over again so I wonder if when a person gets it repeatedly if there isn't a point where it infects deeper than the outside, like mine through the blood and bone, then when they are treated they are only treated for MRSA on the surface which heals faster and with much less meds and because it is deeper they aren't getting rid of it completely. I was in the hospital on 3
antibiotics for a week, two
antibiotics for two more weeks, then finally down to one
antibiotic for another week then sent home with it in IV for another 2 months to get rid of the MRSA on the inside.
I have yet to touch a person with MRSA and catch it though.
As long as your family washes ther hands I do think it will fine to hold the baby after all when I was in the hospital they let my 3 year old, 10 year old, and 12 year stay with me for a month. They didn't all stay at the same time but would take turns staying the night with me, expect 3 year old stayed the whole last two weeks not leaving my side. If it were that unsafe there is no way they could have stayed in my room. BTW, not one of them got the MRSA.
So I really hope you will relax with your family and just keep an eye out for the little one because if she had MRSA she will probably get it again but as long as you have her treated she will be fine. Just be sure the doctor knows if it is something that recus often and speak to them about it getting into her blood.