<human>: My sister has been with her husband (26) for 8 years and married for 2.  Things started to go south when she got pregnant last February.  Her husband was always a sweet guy, a little arrogant but helpful and rational. However, when she got pregnant, he began arguing with her about little stuff and being really inconsiderate.  Now that the baby is here he is not helpful and is still super argumentative. 

Last week while she was holding the baby he started shouting at her about dirty dishes. She went upstairs to get away from him but he followed her up there. She put the baby down and he continued to shout and get in her face. She put her hands on his chest to keep some distance between them and then he shoved her to the floor. I am in shock. I never would have believed that he was capable of this but it's true. I know that he is also verbally abusive to her because their arguments are quite nasty.

My sister has told me that she thinks she might be becoming depressed. My sister has never battled depression before. I can't stand to see her like this but I don't know what to do. I want to have someone beat her husband up, honestly. My mom always told me and my sister that if a man ever hit us we should leave him ASAP. But I know this is easier said than done. 

If anyone has any advice I would *really* appreciate it. I Know that counseling is an option but both of them are doctors doing their residency so their schedules are super crazy and they haven't found/made time for it. I think he specifically needs help because he lost his mom when he was young. What can I say to encourage them to get help? Should my sister just leave him? They have a 3 month old baby :-( Please please please help. Thank you all in advance. I can provide more details if necessary.

Can you give me the gist of the text in a nutshell?
<bot>: My sister's marriage has recently become abusive. Is divorce the only option? What can I say to help her? Is therapy worth it?