I know this has been theorized on and off since the arrest of RA.
Of course anything is possible, but IMO I don’t really think that happened.
We know that “down the hill” is the end of the much longer video LE is withholding from the public, as Libby started recording him some 40+ seconds earlier.
To me that registers uneasiness or fear on her part, not ridicule.
Perhaps, just speculating—-since Libby was hoping to meet Anthony Shots, maybe she was upset to see this guy on the bridge instead and when he began to interact with them she had the instinct to record him.
I’ve taught thousands of 14-year old girls, besides the girls I’ve raised, and genuinely I think girls would be startled and anxious with this guy lumbering toward them, rather than mocking him.
I believe your impression is that first they ridiculed him and THEREFORE he went after them, but it doesn’t ring that way for me.
We shall all know soon enough come trial.
JMO