I see you did a moving average of more than 14mph, which suggests to me you pretty much smashed it.
You could go further and maybe a bit faster if you wanted to.
Seems to me all you lack, or did lack, was confidence.
I wonder if that's partly a gender thing.
A couple of women are among the strongest riders in my Sunday morning group.
But a bit like you, they worry about some of the longer rides, even though they are more than capable of chalking them off.
We recently did a 105 mile ride.
The two ladies in question finished more strongly than some of the men who were struggling towards the end.
Expanding my point a little bit, I reckon
@Pat "5mph" is another lady who is a stronger and faster rider than she gives herself credit for.
Here's a link to your report for those like me who struggled to dig it out of the 'Your Ride' thread.
https://www.cyclechat.net/threads/your-ride-today.173254/post-4460942