That’s a lovely story, although sorry to hear about the two hoglets who didn’t make it. Well done managing to keep the others going.
There is just one thing. Before you release any more hedgehogs it would be advisable to read the BHPS Guidance for releasing rehabilitated hedgehogs http://www.britishhedgehogs.org.uk/wp-content/uploads/2018/09/BHPS-Guidance-For-relasing-Rehabilitated-Hedgehogs.pdf
In particular you will notice that it’s best for the hedgehogs as well as any potential hedgehogs elsewhere for any rehabilitated hedgehogs to be released back where they came from.
I’m sure you meant well and clearly weren’t aware of the guidance – we can’t know about something until we find out about it – but hopefully you will find it useful in the future.