Reddit community has been quarantined due to widespread lack of credibility and misinformation. It's better to double check these claims before trusting them.
It's a video where you can see clearly identified Ukranian soldiers taking her flag and stepping on it and arguig over it. She is offered some food and then rejects its after they start to bully her.
Reddit admins are just helping run cover for Ukraine, like they rest of western media. Just like they helped astroturf Hong Kong's riot propaganda.