Actually I have followed her for many years now and in some live stream and QAs long time ago she was very upfront about her roots. Explaining very detailed where she is from (Mom from Russian community in Estonia, Dad from Finland etc).
I don't think she is lying or covering up anything in this regard, just not talking about it anymore. She also said that she understands some Russian but doesn't speak fluently. Im not sure if she can read and write Cyrillic.
Also understanding Russian helped her at times where she was around many 'jetsetbabes' talking Russian to find out some things about their levelling up, she said that a few years ago or maybe it was on her blog (but definelty once she had revealed herself), I remember 100%.
I am from Sweden myself and when people ask me I say that. My parents are from another country, but I was born there and I don't think I would have to justify all the time my Swedish identity! Honestly I have to give this one to her. She really can call herself Swedish, just like I do.
Also to the ones claiming she speaks broken Swedish, she definitely doesn't. Her Swedish is native. And also her English accent, to me, as a Swede, sounded very very Swedish since the first time I heard her speak, just that she has been abroad for a long time so it is not so strong anymore. Also since many people here mock her grammar, yes its not perfect at times, but the mistakes she makes indicate that she then uses Swedish grammar and sentence structure and translates it to English. The mistakes are kind of typical mistakes that slip into Swedes' speaking English.
Also about her last name: To me it sounds VERY Finnish, I actually have heard it in Sweden before. Theres a large community of Finns here in Sweden and I would definitely not say that Finns are ashamed of their heritage here in Sweden. Yes, there are some stereotypes about Finns but they are rather a loved minority group in Sweden, and usually very proud of their heritage. Finish is an elective subject in many Highschools and we get along well with Finns. I see absolutely no reason why she would have changed her name out of 'shame' as many here have said, but rather since she is a public persona and wants some privacy.
I have been following all the threads and have been reading all these assumptions of her origins and her being ashamed of her origins and it just leaves me shaking my head. She has been proudly translating interviews from Russian in the early days and I really don't think she is hiding anything here. I really believe she was honest about her roots.
Hope I could clear up some misconceptions here.
Edit: also somewhere I read that there is Racism towards Russians in Sweden and that's why she is hiding her heritage and is ashamed, but honestly I really don't believe so. Russians make a rather smaller immigrant group in Sweden. They usually are not easy to spot since they are white and adapt very well and work hard. There are not enough Russians in Sweden for Swedes to have firm stereotypes about them. I have some Russian friends in Sweden and they absolutely have no problems or experience inequality or discrimination.