Likewise. Like in the Philippines in 1942.
Apparently no nurses were killed during the loss of the Philippines (that would have been my guess as well.) There were however nurses killed during the Anzio campaign in 1944 - so the sources listing the nurse killed in Belgium was obviously not correct.
Feb 7, 1944 - 3 nurses killed by German bombs which hit the surgical section of 95th Evac hospital.
Feb 10, 1944 - 2 off duty nurses killed by artillery fire at the 33rd Field Hospital.
http://history.amedd.army.mil/ANCWebsite/ANCWWIIbook/Introduction.htm