请教，赶房客的问题。

       这个房客搬进来一个月，第二个月就不付房租了。
       姐弟俩人一起签了租约：姐姐有政府工作，银行存款（5万）和一个房产；弟弟夫妻儿女一家四口，没有收入，领取残障保险。
       签约后姐姐从来没有住过一天，也没有再露过面。付了一个月房租和押金，第二个月就不付房租了，2月由于支票遗失，造成法庭驱赶失败。3月重新开始。问题如下：
      1，姐姐 2月写了email 说搬出去了，是不是就没有责任了？
      2，弟弟特意拍了房子拍照拿到法庭说房子有问题，如开关没有盖子，墙上油漆不够厚，院子有垃圾，烟雾检查器缺少等（是免费律师给他的表格随便勾的）这些会影响法官判断吗？
      3，弟弟是残障人（警察、法官面前，他就拄着拐杖站立困难；平时一个人搬一块干墙板行走自如）是否有特别的租房保护？
      4，送检人把3天通知贴在门上，又邮寄一份，他反抗信上却写没有送到邮寄3天通知。我有贴在门上的照片和邮寄信封照片。       5，月下旬开庭，姐姐不会到场，我应该怎样要求？所欠房租和水电费用可以把2月跳票，3月加4月一起算吗？而UD100表上我只写了3月房租。
      需要找个律师一起去吗？
      附上姐姐的Email：
   Angela 
   I am sorry that I did not reply  to your email earlier but as you know my brother was very ill and he just passed away recently.  I am having problems with Richard Medrano I moved out of the house a week ago when I found out he did not give you the rent for the month of February. I know you agreed on taking out the back yard trash and pay Cynthia 50.00 dollars for cleaning the bathroom and you haven't done it until now but I told Richard to talk with you and deductive the 50.00 from the rent and asked you to take the trash out. I talked with him yesterday and asked him to pay you the rent or move out. At this time I am asking you to go talk with him and asked him to pay you the rent, if he gets aggressive Advised him that you will file a police report and if he does get aggressive please do file a police report. I know he will not harm you in any way but he can try to intimidate you. If he does not pay you please evict him as soon as possible.

 Thank you for your understanding.

 Blanca 

 还有这封：

I will ask you in a very professional manner to stop calling me. 

 You lost the rent check that my brother gave you. You need to wait until Monday so we can call the bank make sure the check has not been cashed put a stop payment then we can produce another check. I will not talk to you over the phone. For now on everything will be my email.