Hi, please can I have your advice. Regarding my mother and my youngest sister. My mother is 67 and my younger sister is 30 who has a 1 year old. However the father of her child has done pretty vile stuff like struggling her while on holidays, walked out on her numerous times, pushed my mother on New Year’s Day, calls my sister every name under the Sun, doesn’t really bother with his son, he causes arguments with my sister purposely just to go out to drink and take drugs. When these situations occur we all really worry about my sister and all rally around her, BUT she always gets back with him and expects everyone to be ok with it and welcome him back into the family, however this time all my mother has asked is not to see her boyfriend over Christmas (every Christmas for 5 years he’s managed to have my sister in tears) nothing is planned over Christmas involving my sister my mother or her boyfriend, my mother has simply said he doesn’t want to see him. However my sister is basically hounding my mother to see him over Christmas and act like everything is fine. It’s causing my mother so much stress. May I add that he walked out on her Saturday just gone , she was beside herself, he was vile, saying how he doesn’t love her etc , however they are back together. Please can I have your honest opinion.