I wish to see your girlfriend as well. Got any pictures?
Easiest explanation would be that you saw a cluster of Starlink sats.
I don't have the software, time or interest to track sats, but I do know that NASA used to have a tracking page for orbital objects which was a sanitized version of the NORAD tracking. Maybe that will help?
When I was young, I was really into astronomy and space stuff. If you're really going to find out what this stuff is (anything that's orbiting one night will most likely be there the next) you're going to need a good set of astronomical binoculars and a tripod with a fluid head. Happy hunting.
chek't
Throw Hinkley an adolescent chimp in a diaper and let's find out.