Why do people stay married if they dislike their spouse?

I know this girl who currently is still married but unhappy. She stay speaking about her dislike for him. They have kids together as well. Their marriage is complete gone and dead. She still stay in the house they share because he’s paying the bills plus car note. Her husband is the military and away on his assigned duties. She throws parties and has gatherings with just her family members. She don’t talk to me anymore as well. This includes his oldest daughter. She speaks about how much she don’t like him and don’t care for him. She stays because of the kids and to keep the family together. She keeps saying she gonna file for divorce but never do. As long as he paying bills and car notes, she wanna stay. She tells me she regrets getting married

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Thanks for selecting this question as great! Because gosh I wanna know all the possibilities smh
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He asked her for a divorce.. he found someone else and ready to move on. She had opportunities to get a higher paying job but declined them all. She wants him to pay for everything. She disrespects him, his family, and his older daughter terribly. I told her few weeks ago he probably would. She told me she want everything he has especially money
Why do people stay married if they dislike their spouse?
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