Is there and ESL programme in the school? If not, are there any other options for her to take an ESL course elsewhere?
The problem is that it would be quite a job to create science based materials. There are things around (http://www.usingenglish.com/amazon/us/1552440869.html), but most are aimed at higher levels. You could try here to see if there are any sites that might help: http://www.usingenglish.com/cgi-bin/...?query=science