Here is what the EOB says
RMD has to be taken out if it is a required distribution year. Since she is still employed, an RMD is not required for 2018. If she terminates during 2018 after the distribution has been made, 2018 will become a required distribution year, with no assets left to make the RMD. If that happens, the distributing plan is still treated as having satisfied its minimum distribution requirements, but the the recipient plan will have received an invalid rollover amount.