At this point the childcare is still very much a necessity for us. By keeping Caitlyn at home we are able to avoid her picking up some or the other horrible disease and passing it on to Bianca. Chickenpox especially is pretty bad, but something as "minor" as a cold could result in something more serious for Bianca too.
We had a stint last year where I had Caitlyn and Bianca together for 8 hours a day (for around 3 weeks) in an insolation room and that was really tough and exhausting and didn't do anything for Caitlyn's routine as she just wasn't sleeping at the hospital.
One thing about this journey is that we always have to have a backup plan for our backup plans, and as a family we've all had to make some sacrifices. So it is really important to us to give Caitlyn the stability, the extra attention and for her to be able to stick to her routines.
Having an au pair was one of the best decisions we have made!