Do you think it's right!!!

I found out I was pregnant last year in September and my family was happy and my sister always said she didn't want kids right now and wanted to wait. well since I got pregnant she married her bf and cause that's the only way he would have kids but he was not ready for kids and she gets mad at him when he says he is not ready and says she does not want to be with him anymore only because he says he isn't ready right now so tbh I feel bad for him like she only married him cause she wanted kids and not because she actually loved him and she didn't even want a baby till I got pregnant she gets mad at him and is always so mean to him but that's nothing new she gets mad at everyone for everything do you think she is right