Mandjas,
Often times, when I feel "guilty" over a decision I have made that I know undoubtedly is the right one, I remind myself that I am making the decision based on what IS "Today". It isn't really "guilt"... what I am feeling is the emotion of sadness because I wish it didn't have to be so. I am not choosing the decision for no good reason. You know your Son is very important to your Mother, but her behavior has put you in a difficult position and hence, you have had to make a difficult decision. It's not against *her*, you love her, it's against her choice to take your Son out while being very drunk.
I feel for you Manjas.