One of the things about adoption, for people on the periphery, is that it sounds lovely. Give a child a home? Of course. How lovely. Why wouldn’t I support that.
The reality of modern adoption is that the vast majority of children will have some form of developmental delay, all will have additional support needs, some of those needs are very complex indeed. There really aren’t any perfect, relinquished babies in the UK, even children placed in infancy will have experienced adversity pre-birth that impacts them.
Children in care are routinely monitored by paediatricians as part of the local authority corporate parenting duties, that’s not unusual at all, nor is the need for further assessment and testing.
All adopters need to have contingency plans for work, finances, childcare because there are lots of uncertainties. Your friend will have had to consider this as part of their assessment process. That doesn’t mean there won’t be bumps in the road, or that everything will be perfect. It does mean that as far as possible they are making an informed decision.
I imagine your friend may be reluctant to answer your questions because she knows you have concerns, and she doesn’t want to talk about their very private decisions. I adopted 8 years ago, my friendship circle is very different now than it was pre-adoption partly because some people were judgmental about my kids, couldn’t offer the promised support when it came down to it and clearly viewed my kids as “less than”. For every one of them it started with them asking “gentle” questions about my kids, their background, our finances, my kids capacity. It them followed with unspoken “I knew it” when I inevitably struggled with the transition to parenting two small, traumatised children.
I’m sure you mean well, but it really is your friends decision. Her heart might well rule her head, but it’s still her choice. She might end up feeling overwhelmed - most of us do. Her life will certainly change in ways she can’t even imagine. The only question for you is whether you’ll support her unconditionally and without judgement.