If I were in Olga's position I'd go create another Natasha account on the same platform and start making videos saying "Hey, Natasha here. I just learned what things are really like in Ukraine and I'm furious about what Russia is doing to innocent civilians. Putin is an evil man. Also my main account has been hacked, please report it so I can get it back."
If Natasha is Olga then Olga is Natasha. Olga probably has a case to take over the accounts, given they're videos of her, and start pushing out antiwar propaganda.
Maybe I like mischief too much
Can confirm. As a kid, I saw a lot of jokes about how horrible puberty is. I thought everyone felt the same way as me, since they all acted like it.