Congratulations!!

When I was 18, a close high school friend of mine got pregnant. Her mother threw her a baby shower and it was fine! She actually had it in a local VFW-type hall so most of the people there didn't even know who technically was the "hostess." We just assumed it was her family who threw her the shower. Or, if she still lives with you, you can throw it at your house and then you will have the advantage of not having to haul all the gifts home

Best wishes to your daughter