First of all, we would highly recommend you to go and meet mature Russian woman in her own country. It is really difficult (almost impossible) for Russian women to receive visas to English-speaking countries due to politics of these countries. If you send her money to come and visit you then there is high risk that you will be used by scammers who will take money and disappear.
No matter how beautiful or appealing vature Russian woman is do not send money! If for some reasons you cannot travel you can help her not sending money directly to her, for example, buying tickets for her, paying for hotel, or compensating her half of her expenses when she comes to you and you see her in real, but do not send money for the people whom you know from internet. Never! Make it your principle and follow it! Second advice go and stay in hotel (or an apartment). If it is just a first meeting with a woman then we would not advise you to stay in her apartment.
Maybe you will not like her or she will not like you, and your staying in her apartment just will make things worse. If you stay in the hotel you will be more independent in your decisions. Regarding your passport we can give you the same advice as we give to women everything can happen, you can loose your passport for example somewhere, so better do some copies of your passport and keep it apart from your passport. Of course, you should bring some souvenir for your woman, it should not be necessarily something expensive and with diamonds. Let it be something simple from your country, but it will show your care about her, that you not just went to have a good time, but you thought also about her before going. If she has children then you should bring something for her children also.Third advice many Western men for some reason believe that mature Russian women are not too much sophisticated and do not expect much so even some compliments will be enough to make the woman run after you. Some men on the contrary believe that all mature
Russian women need only money and try to show that they have it as if trying to buy a woman. Both variants are not true. Women do not register on the site just to escape from their country to the better life in another country or to get lots of money, they search for love, so they require the corresponding attitude and lots of attention. If you really want to be with this woman do not count how much money you spent for the tickets to come to her and on this basis do not buy her flowers. Of course you do not need to pay for her shopping and waste money, but you can buy some flowers to her without any reason just because she exists, invite her to the restaurant, maybe on some boat trip try be romantic and make the woman feel a Woman with you.