Looks like fun. Keep an eye on the right side engine case and rubber boots if she drops it on that side or smacks a rock. Air leaks there while riding in sand and dust will kill the top end pretty quickly.
Of course a new top end is about a 15 minute job on that bike. But my KE125 had the rings ruined a couple of times from sucking beach sand through the boots and from cracking that engine case over the carb.
640E, MXC200, XT200