well, its ok if she isn't working 555 its been about 10 years since I brought my wife to England but she did all the research what I needed to prepare etc. first it was tourist holiday visa then a settlement visa after she wanted to live in UK
she'll need a 3 month tourist visa but you have to prove a lot of evidence such as bank statements showing you can support her, invitation letter which includes plans whilst in England, a few household bills, old emails proving that you know each other and pictures of your house in England
Yes the company who u work for arrange the paperwork then just renew your none immigrants B visa at your local immigration office. My friends do it every single year here in Thailand