My girlfriend came to the U/K 8 years ago, legally, as a student when we met. After her university course, she continued to stay (illegally) and worked part time (illegally)
For personal reasons, she applied for a Asylum (whilst being here illegally) but she was refused. So we applied for the FLR visa, but unfortunately she was also refused that

So, she departed the u/k a few months ago, after the FLR refusal and we applied for a spouse visa. We planned to get married this coming July in the u/k. I already booked the venue on the strength of this visa being granted. The wedding confirmation was included in the application. We thought we were safe under the Appendix FM regarding her over staying.
YET again, we refused for 320(11). After endless researching across the internet, am i right to say that the HO need a aggravating circumstance to refuse, being just overstaying and applying for asylum & FLR isn't enough to refuse because there aren't any aggravating circumstances, nor none was listed on the refusal letter.
We have met all aspects of the appendix FM.
Given the fact there are NO aggravating issues, is there any point appealing? Has anybody been in this similar position where the HO have given no aggravating circumstances? Im at a loss where to go from here.
Much appreciated