She's really not dancing. She is singing along with the song "Creep" which is about a misfit who doesn't belong.
I thought it was dancing as they (she and her husband) were on one side of the plaza and others, local people dancing on the other side as I vaguely recall. She probably felt unique in herself and in many ways she was unique for doing what they did for 2 years.
Regardless, she does appear very happy in that video and in the Victoria Falls video which is lovely (they are wearing raincoats and talking a bit)
Thus far can't see anything that was an issue at least on tape, but it's when the tape stops running I guess like behind closed doors.
YET, you'd think that when the tape or video stops running if they argue a lot her demeanor wouldn't have been so happy most of the time.
Strange case.
If she did this to herself, I'd think that there were instances earlier in her life the family knew about which told them she had problems. That would then help us understand why they were reluctant to push the LE for more searches. Plus whatever kind of message she left for everyone.
I know when my daughter (who looked a lot like Leanne but was a few years younger) killed herself by overdose on her prescription medications, she had been ill for a long time but not diagnosed for it, but it was easily hidden from everyone unless you knew the person intimately and knew something just wasn't kosher.
I think that is what was going on with Leanne.
For my daughter, it was similar as for an upbeat happy face for the public., even two days before she disappeared she sent a video text from her cell phone to her sisters of her kissing her husband and joking saying they were going to celebrate their 5th anniversary in a few weeks. She had no clue he was going to ask for a separation or divorce as he did 2 days later. It pushed this very ill young woman right over the edge. She saw no way to go on.