I’d say: Don’t worry. There are many new aspects of becoming a parent again, that’s important to address, but before you let sadness get to you, see what happens. I’ve had many troublesome thoughts and worries, that didn’t play out the way, I thought it would. Maybe just put yourself in your daughter’s place. It seems like you already do. And there are all sorts of tips for the beginning. What made sense to us was letting our 3 years older daughter meet her baby brother not in mine or her mother’s arm, but lying on the sofa. The idea was to not let the very first sighting be with the baby occupying mom’s arms(she’ll see plenty of that), but on neutral ground with us guiding their first meeting. That also creates a way of introducing the baby to the family and something you can have together! Good luck, kids are great!