Disclaimer; Everything is owned by JK Rowling (obviously!)
I'm not sure how it happened really, it's all a blur, a mess of small moments and big decisions that ended here. Ended with me, Hermione Granger carrying a 11 month old baby through the door of my apartment and into his new home.
At the end of the war the wizarding world was in chaos, although the war had been won by the light there was still a lot of darkness everywhere. It seemed to suck the life and happiness out of the celebrations that followed the defeat of voldemort. The clean up took several months and even now, 11 months later the Wizarding world was not fully healed. It was not the buildings that were the worst off but the people, nearly every wizard and witch had suffered greatly during the war and most were struggling to move on.
During the war, I was running off adrenaline and desperation and everything happened in the blink of an eye, lives were lost, friendships were destroyed and no one knew who to trust. After the war everything slowed down, it was hard to know what to do with myself, after several weeks of mourning loved ones I was back in proactive mode, the only way I knew to survive.
I helped rebuild hogwarts, and other areas effected by the war. I had to keep active, keep moving forward, moving on. I stayed at the burrow with Harry and the Weasleys. Ron and I were in that awkward beginning stage of a relationship where you don't know where you stand. It was at this time that I began to notice a difference in Harry. He was lost, he didn't know how to live when nearly his entire life had been centred around destroying Voldemort. Now that was done he didn't know where to go from there. His relationship with Ginny began to suffer and just 2 months after the war had finished, he left, leaving nothing but a note telling us not to contact him, that he needed time and he would come back when he was ready. Ginny's heart broke, she blamed everyone and anyone for Harry leaving, pushing people away and throwing herself into Quiddich and preparing to return to Hogwarts for her final year.
3 months after the war mine and Ron's relationship hit the rocks, we barely spoke and when we did it was to argue. I started spending more time with different people, people I had met through the war clean up; Neville Longbottom, Hannah Abbot and Daphne Greengrass became close friends of mine. While I was spending time with my new friends I began to spend less time with Ron and he became jealous of any man he saw even look at me in the street. Meanwhile Ron was getting a lot of female attention, the type he had always wished for at hogwarts and I suspect he began to act on the attention. The nail in our relationship coffin came however when Viktor Krum came to Wizarding London. I went to visit Viktor at the leaky cauldron and we went for lunch, old friends catching up. The press caught wind of this and a particularly nasty article by Rita Skeeter and several photos of the two of us at lunch and outside Viktor's hotel room soon became "evidence" of our affair. When I arrived at the Burrow from a clean up shift in Hogsmede it was to find all my belongings scattered in the mud and a furious Mrs Weasley waiting for me.
8 months later and I still have not heard anything from the Weasley family after that day. Mrs Weasley called me every name under the sun for the hurt I'd caused her dearest Ronnikins. Everytime I tried to explain I was cut down and told never to come near her family again. My life changed that day, I felt completely alone for the first time in my life. I didn't have my parents, who's memory charm was irreversible and I had no idea where Harry was so I went to Neville. He must have held me for hours while I cried and was my guardian angel in the weeks that followed. He kept the press at bay and helped me find an apartment in muggle London even managing to squelch one or two of the more heinous rumours about mine and Ron's break up (although I expect that galleons were involved). In the months that followed my life was gradually changing for the better, but it wasn't until 9 months after the war that my life changed completely.