Civil or mechanical engineering major?
Differential equations is not that hard to find, but engineering courses like statics, materials, and electronics may be harder to find, and not necessarily the same at all UCs and CSUs (so harder for community colleges to match all of them). Any particular UCs or CSUs she is targeting?
http://www.assist.org can help show which community colleges cover the target majors at the target UCs and CSUs the best.