Why Can't the Unborn Just be Removed?

This is a question my cousin asked me and I wanted to get input from everyone, especially healthcare workers, before replying to them.

This is what they asked, verbatim:

"Why can't the doctors just, take it out, you know? Like, she doesn't take a pill to starve it to death, or scrape it out or rip it apart, just, get it out in one piece. Why can't they do that, and like, stick it in an incubator after? Why does she have to kill it?"