WHICH LIE DO WE BELIEVE

Mom has lied the entire nine years that I have know her, I never know what to believe for five years she was to busy to see the kids, shes had so many boyfriends that she was going to marry, then dropped,but finally found this thing to marry, its kinda funny the way it played out though kids dad got out last year for about a year we tried to help him he moved in our house, we were so hopefully he would go off the drugs and take care of his kids to no availe he decided to do drugs and to hook back up with amanda the kids mom so she stays at the house, but while staying there she was sleeping with dad and her new husband to be so she winds up pregant and once again we wondered whos it was this happened with nathan to  parentity test proved it was dads,  now this last one we hoped wasnt dads and it turned out to be her new husbands but the funny thing is in dec she thought she was preg and they picked out the name chole and she wasnt but in feb the baby was born and her and her new boyfriend chose the name chole to lol. 'now they are supposed to be  buying a house,which amazes me because I thought you had to have good credit now she has a crimanal record garnishments embezzlement charges no job no lic and her new hubby has only been on job for year if they can buy a 200,000 house all of should be able to ;lol  now we are not sure if we are getting a house but we have moved in with our mother in law ,and wanting theses kids to spend weekends there not a good idea ,so which lie do we believe time will tell