Broken family :(

Im da youngest child and only daughter in my family.My dad passed away when I was really young and my mum raised myself and my 3 older brothers by herself. A few years ago one of my brothers began dating this chick, and after a few months she fell pregnant.My mom was really disappointed in my brother especially because she had struggled a lot after my dad died 2 take care of us.So anyway,da chicks family insisted on a wedding and my mum went out of her way 2 giv dem da best wedding she could possibly giv dem on such short notice. After the wedding there wer many instances wer da new bride had caused problems 4 our family, da most serious of which was when she got drunk and left her sick newborn baby at home and went drinking after our first cousins wedding.She had created a huge scene der wer she swore my mum and stuff and accused my other brother of saying he was gonna rape her!Her father came 2 our home and threatened myself and my mum and even pulled a gun on my other brother wyl da brother who was married 2 her just stood by like a spineless whimp wyl someone threatened his TWIN brother! After that incident we lost contact, and frankly I was grateful 4 that. Den der was a little communication but mostly that ignorant female complaining and stuf. But mor recently, my brothers x-girlfriend from hischool had contacted me and asked 4 both da twins email addresses and knowing that al of dem wer in committed relationships I tawt nutin of it and gav da addresses.Little did I know that my brother would communicate wid dis woman in a mor dan friendly manner,talking on da phone at odd hours of da nyt and stuf, wyl my other brother didnt even reply 2 her emails.Now his crazy wyf is blaming me 4 al of it and practically stalking and harassing me thru sms’s, emails and even on a social site.Its not like I forced him 2 reply 2 her mails and exchange numbers and stuf.I meant nutin by it.Now shes started attacking not only me but my mum who has done absolutely nutin 2 dem watsoever.N now my brother himself has been saying bad things about both mum and me, and it hurts mor coming from your own blood you know. Im not sure my what my question is here, but I just dont know how 2 deal wid dis at al.I just feel so terrible al da tym.just wanna protect my mummy :(