I have not spoken to my sister for over 4 months? We have always had a strained relationship, I find her extremely selfish and self centred, she would and has described me as moody and short tempered, which I probably am. She was on her own for a month, during the summer and I asked if she would like to come to mine for a few days and spend time with my 2 DC whilst DP and I worked, through the day, DC 9 & 6. I do have regular childcare, which I continued to pay for even though I didnt use, I thought she might like to spend some time with the kids and have some company in the evening. She appeared delighted to be asked. My kids were happy she was going to be looking after them and staying at the house with us. During her stay, I noticed odd behaviour, arguing and getting angry with my 9yr old, about football rules!!! And talking constantly and I mean constantly about her husband, he works away. She has always liked a drink and in the evening, she was always offered a drink, I did say to her to make herself at home and eat/drink whatever, whenever she wanted. She refused drink every time, even though my husband had the odd beer. Most evening she stayed up later than us (we were both working) and on a 2 occasions came into our bedroom to ask me if she could take my DC down the stairs to watch sport, it was after midnight!!!! Anyway to cut a long story short I found a 1/2 empty bottle of alcohol in her room, this was on her last night with us. I did not confront her then as I knew she would be defensive and I didnt want the kids to be around. I decided to wait until her DH was home, so she wasnt alone and talk to her then. Unfortunately my brother told her I found the drink in her room and knew she was secretly drinking, before I managed to speak with her. She was livid and sent a aggressive text saying I was pathetic and it was me that had abnormal issues with drink (I hardly drink, too many alcoholics in the family) and I dont particularly like it. Heavy drinking is not new to her last year she arrived at mine early one morning, and smelled very strongly of alcohol, she has been a regular to heavy drinker for many years. Since then her and her husband have been badmouthing me to other family members, I dont particularly miss her or her husband but the situation is upsetting my dad, who thinking we should make piece, I feel until she is ready to admit she has a problem, I really dont want anything to do with her, AIBU?