Arranging travel for child, need advice on insurance.

My daughter currently lives in Portugal and will be spending the summer with me in San Diego, California, USA - I’d like to get her travel health insurance while she’s here since US insurance/healthcare can be difficult to work with even for residents. I’m not concerned about trip insurance to cover travel plans. I’ve looked at other threads and searched online to get an idea about experiences and details with different providers, but wondered if anyone had experience with similar situations and/or had any rough ideas on cost. She will be with me approximately two months. Thanks!