My sister is being very difficult regarding my wedding. We are getting married in April and I started arranging plans last August. She’s my only sister and we don’t have any other siblings. She used to be married and her husband left her so now she doesn’t believe in marriage. She has been very critical, made my stress levels worse, saboataged my hen party so now I’m not having one and been very unreliable. She’s also refusing to have her hair and makeup how I had planned and I have paid for everything. I have not expected her to contribute towards anything. I’m doing my best to keep quiet but inside I am exploding. She’s constantly whinging and hasn’t even booked my wedding off work yet. She told me she may not be able to come as it’s on a Thursday and she thinks no one else will come. (She also got married on a Thursday!) She’s also said she’s not coming to the rehearsal and was unhappy she will have to travel to my house for 8am even though I offered her to stay over the night before my wedding. She keeps complaining about the money I have spent and it’s really putting a downer on the experience for me. I’m only having two bridesmaids her and my best friend and now I’m thinking I don’t want her to be my bridesmaid, she seems to not care anyway so will it be so bad if I just tell her she doesn’t have to be anymore? How can I tell her this?