You do realise that doing so would breach the child's rights under the UN Convention on the Rights of the Child, yes?
And you do realise that what you are asking for is a de facto cessation of safeguarding girls, yes?
We have boundaries to protect children. A 12-year-old girl who seeks an abortion is a girl who has been raped. She needs to be protected from her rapist, not given access to an abortion, no questions asked. That would be irresponsible and a clear failure to safeguard the child.
Here btw is the NSPCC on the issue of safeguarding girls in this context, showing that the correct application of the Fraser Guidelines requires a safeguarding assessment:
Fraser guidelines
The Fraser guidelines apply specifically to advice and treatment about contraception and sexual health. They may be used by a range of healthcare professionals working with under 16-year-olds, including doctors and nurse practitioners.
Following a legal ruling in 2006, Fraser guidelines can also be applied to advice and treatment for sexually transmitted infections and the termination of pregnancy (Axton v The Secretary of State for Health, 2006).
Using the Fraser guidelines
Practitioners using the Fraser guidelines should be satisfied of the following:
the young person cannot be persuaded to inform their parents or carers that they are seeking this advice or treatment (or to allow the practitioner to inform their parents or carers).
the young person understands the advice being given.
the young person's physical or mental health or both are likely to suffer unless they receive the advice or treatment.
it is in the young person's best interests to receive the advice, treatment or both without their parents' or carers' consent.
the young person is very likely to continue having sex with or without contraceptive treatment.
(Gillick v West Norfolk, 1985)
Child protection concerns
When using Fraser guidelines for issues relating to sexual health, you should always consider any potential child protection concerns:
Underage sexual activity is a possible indicator of child sexual exploitation and children who have been groomed may not realise they are being abused.
Sexual activity with a child under 13 should always result in a child protection referral.
If a young person presents repeatedly about sexually transmitted infections or the termination of pregnancy this may be an indicator of child sexual abuse or exploitation.
You should always consider any previous concerns that may have been raised about the young person and explore whether there are any factors that may present a risk to their safety and wellbeing.
You must always share child protection concerns with the relevant agencies, even if a child or young person asks you not to.
learning.nspcc.org.uk/child-protection-system/gillick-competence-fraser-guidelines#article-top
HTH