Summer has you all beat. She's almost 10.
Meg is 9 1/2 at best. Maybe as old as 10. It is a good thing I told her she has to live to at least 20. And Meg always listens.
Every once in a while I have a minor meltdown about it. But mostly? I revel in the fact that she is 9 1/2, and fit, in fabulous condition, and still likes to go on long hikes or run at a trial. I've spent enough time working with older horses (Boston lived to be 30) that I know keeping them fit and active and mentally engaged goes a long way. I do the best I can by her, and hug and kiss her every night. Hopefully I will be doing that for many years to come.