General or Family Visitor? Fiance visiting UK

Hi
I currently hold an ILR to UK, I am about to get married in June this year and wish my fiancé to come along with me to the UK soon after our wedding. She does not intend to move to the UK for the next one year and want to visit me only for a couple of months, July and August.

In this case, since we want her to have the visa before hand and she is still not married to me, what category of visa should she be applying under? Is it family visitor since she is my fiancé, however how do we prove this in our application? or does she need a general visitor application?

Would highly appreciate any advise.

Thank you,
Ravi

Usually in these situations this sort of thing is seen as an attempt to settle, so the onus would be on you to prove the contrary.