Ok. The thing that’s annoying me is the “glottal stop”. She’s not saying “Tigh’en”, where you gloss over the dropped t, it’s “Tigh-(stop)-in” with a sharp stop before the dropped t. Not so simple as dropping the t in “fasten” but more of a full stop at the dropped t like when you say “uh-oh” where there’s a full stop between the two utterances.
Nothing to see here… move along.