Worth noting that abortions in Great Britain are technically only legal for a series of specific medical reasons. It’s really only by (perhaps somewhat precarious) convention that doctors approve abortions outside those reasons. In this specific case it sounds like the girl would almost certainly be prosecuted.

Strange, according to medical practice, fetus between 22 and 37 week is considered to be "premature babies" and are treated and saved. So even disregarding all moral/ethical questions such fetus is a human being, as it is able to stay alive outside the womb, so it is no longer "part of female body" (which is also not correct even for 1 day fetus, as fetus has its unique DNA and is not part of someone's body).

But you can't burn the body...

Doesn't make it right in the opinion of a lot of people though.