It is too bad she reacts like that. Especially when she knows what you really want (& what she thinks you should have), you just can't have or afford right now. I think my parents where diappointed when I got my house but it is fine now - I would hope since it has been 8 years !
I still felt bad whenever I had a problem w/ the house & had to turn to them for advice, etc. I felt like they were thinking "I told you so". But, I got past that & it was really nice to have something that is all yours. When i moved here after 1st D, I had never lived on my own - went from parents to college w/ roommates, home again & then lived w/ 1st H. So, I cried myself to sleep a few nights at 1st but I got thru.
Kind of funny though - I am trying to be positive & offer you encouragement but am not following my own advice in my situation! Oh well it is easier to see things logically from the outside sometime.
I think that you will find that at this point in your life, it is nice to have neighbors, go for walks around the block, meet people etc. There are some evenings in the summer when I sit outside talking to neighbors most of the evening. It really can be nice.