I was just able to watch your video. She doesn't look ready to kid, lol. Here's the deal with goats and kidding.. they do it when they want and how they want, and lots of times you can "see" things that they are doing and think it's labor. Some of the things you told us sounded like getting ready to kid, but without laying eyes on the actual goat, it's really hard to guess if it's true signs or not.
I think we've talked about checking tail ligaments? If not, let me know and we'll go over that. What you are looking for is a doe that has lost her ligaments, is hollowed out and belly dropped, is uneasy and restless, has a change in behavior whether that be more lovey or more distant, has bagged up, is nesting, etc. Some does do it all, others don't. A lot of my does do a lot of stretching and rubbing before getting ready to kid, they do that to get the babies into kidding position.
Is this her first time around or no? If it is not, and you are seeing udder development, it should be sooner rather than later.
I don't see any reason to get concerned until she is actively in labor pushing and doesn't get anything accomplished.