Should I tell her parents she's pregnant?

Ok, so this is going to be a long explanation…

Anyways, yesterday my friend told me she was getting nauseous, just in the mornings. i suggested jokingly that she was pregnant, and she got this horrified look on her face, and realised that she could be. According to her she had sex two weeks ago (yes, i realise its early for morning sickness) and her period was late. I suggested she get tested at the pregnancy resource center, and she did.
Today she told me it’s positive, she’s pregnant, but with a high risk of miscarriage. She’s excited, already picked out baby names.
This is the problem: Her parents have no idea. She doesn’t want to tell them because she’s afraid they’ll make her abort the baby because she has many health problems.
Here are some things to keep in mind:
1. This girl is extremely naive about pregnancy. She had no idea, for example, that drinking coffee was bad for the baby, until I told her.
2. I dont really know her that well. but,I’m her only friend, and one of only three people (the lady at the pregnancy resource center and a random guy who overheard our conversation) to know
3. telling her parents wouldn’t actually be telling her parents. I don’t know how to contact them so I would probably be asking her siblings for help or talking to a school counselor.
4. I have considered the possibility she’s making this up for attention