I need help with my ex girlfreind?

She broke up with my four weeks ago I didn't do anything I left for four days to help my brother move came back she sed she wasn't happy I was back that seeing me made her mad we dated three years I didn't understand Nether did she I gess I've been giving her space trying to talk evry once in awil got her flowers twice she called tonight sed she hated me that I keept her away from her brother and sister and that she was tired of how I treated her mom I never ment to do any that I dnt know what happend to me there for awil I apologized I love her to deth what can I do