My advice , for what's it's worth, Go and see a solicitor. He/she will tell you what your entitled to. Even your 10k investment in the property, counts for something. If you did the work yourself, and this was the cost of materials, then consider the cost of the labour (even your time counts for something.) A good solicitor could get you a good settlement.
Don't listen to those on here that tell you your entitled to sweet FA,,,, You have been married (albeit for a short time) and have contributed to the marital home.
I was married to my last wife for 6 yrs and I was (seemingly) treated as a lodger within the marital home. My ex already owned the house before we were married (although she had only bought the property 18 months before we were married)
During the time we were married I had substantially refurbished the property, installing a new kitchen and building , built in wardrobes in both bedrooms and completely redoing the living room (new flooring , fireplace etc) I decorated throughout and even after we had split up , installed a new bathroom suite (yep I thought we'd get back together) (too bloody soft by half)
Any ways, for my trouble, my solicitor suggested I'd be able to settle for £25 grand, even though she claimed she had bought all materials (which of course she didn't)
Beware though,,,,,, once solicitors get involved, things can get rather nasty. During my first divorce (glutton for punishment, but I do like wedding cake) we were all set to get back together and sort things out, until solicitors were involved, and it all went downhill from then.
Put it this way,,,, If you owned the house, and she had contributed very little towards it,,, How much would she be claiming?? (I suspect quite a lot more than your expecting)