Is an adult being a pushover and letting people push them around a weak coward?

Let’s say I have this friend that I know. Her friends and family all only describe her as “Nice”. I mean she is so nice. I mean it’s all right, but her friends or family are very concerned about her being too nice too people. She’s always dropping everything she does to go help them but she complains that she does not get any appreciation or she never gets a thank you are all. She will help someone with a project but she ends up doing all the work but she doesn’t say anything. She worked really hard to get the promotion but she didn’t get the promotion. Anyways if you watch people talk to her any kind of way, she’s a grown woman that was people push her around and let’s men disrespect her. Her dad is very disappointed in having a pushover daughter and he tried everything to help her. He called her weak snd got in her face. Her best friend is a kind girl but doesn’t put up with anyone’s shit. She cried and said, “Why can’t you be like your best friend! At least she has self respect and a backbone. People respect her. Coward.”
She said everything people said about her about it being nice and not believing she will fight back to her. She’s tired of it.
People feel empathy for the little child that gets pushed around they help, but if it’s n ADULT, they have no empathy and tell the adult to suck up and being a coward.
She I tired of being cold on for being the nice for.