Sometimes it is best to just ignore the problem and let it work itself out. Your coworker is obviously troubled and jealous of your newfound love. She does not have a partner but does have a child which she feels puts her on a level above you. Your relationship and happiness bothers her because she is lonely and not happy and inwardly wishes that she had someone to be her friend. Her infertility also makes her insecure and feel as if she has less of a chance of ever finding a mate. Her meanness and brash manner represent her character flaws. I suggest being her friend and countering her criticisms with niceness. fell sorry for your coworker and don't e angered, she is upset, and confused, and needs friends