The Seridei Eish addresses this issue in two places. In an article in Hapardes (No. 33 Vol. 4 January 1959) he quotes R’ Simcha Elberg who explained ??? ????? ????? ??? ?????? ???? ?? ???? ???? ???? ?? ????
and therefore he can’t leave for anything. R’ Elberg actually paskened thatif someone is chaye misa, eis Din has to kill him, even if he can save all of Klal Yisrael. The Seridei Eish expresses his astonishment, and discusses R’ Unterman and the Ohr Sameach and concludes:
???? ??? ???? ??? ??? ???? ??? ????? ????? ????? ??? ???? ?????
???? ???? ??’ ???? ?????? which doesn’t actually seem all that different from R’ Elberg. You can read the article at
http://www.hebrewbooks.org/pdfpager.aspx?req=12748&st=&pgnum=10&hilite=
In a teshuva (1:168) the Seridei Eish writes:
???? ?????? ?????? ?? ????”? ????? ?”? ? ?????? ???? ???? ???? ???? ??? ????? ?????? ????? ?????? ?? ?????? ?? ??? ????? ?????? ????”? ??’ ???? ?”? ?”? ???? ????? ?????? ??? ???? ????? ?”? ???? ???? ???? ??? ????? ?????? ????? ??? ?????? ???’ ???? ???? ?? ???? ????? ??? ?????? ??? ????? ??? ???? ?? ??????? ?????? ????’ ?”? ??? ??? ??? ???? ????”? ???? ??? ?? ??? ????? ??? ???? ?????? ???? ??? ?????? ?????? ?????? ???? ???? ????? ???? ?????? ?????? ??? ????? ????? ???? ????? ????? ?? ???? ???? ????? ??? ?????? ??????? ??????? ?? ?? ??? ?????? ???”? ??? ???? ?? ???? ?? ????? ???? ??? ?????? ?????? ????”? ??????? ????”? ?? ???? ?? ?? ???? ?????? ?????? ????? ?????? ????”? ??? ?????? ?”?????” ????? ?? ?? ???? ?????? ?????? ??? ??? ?? ?????? ????? ?????? ????? ?”? ??? ????? ???? ??? ?????? ??”? ???????? ?????? ??? ????? ????? ???????? ???????? ?? ???? ????? ?? ??? ????? ????? ?????? ??? ????? ???? ????? ????? ??? ???? ????? ?????? ??? ??? ????? ???? ????? ??? ??? ???? ????? ??? ???? ??’ ???? ????? ??’ ????? ??? ?? ??? ???? ???? ?? ?? ???? ?????? ??????? ??? ??? ???? ?????? ?????? ??? ???? ???? ??? ?????? ?? ??? ??? ??? ???? ??? ??? ????? ?? ???? ??? ????? ????? ?? ???? ??? ??? ???? ??? ??????? ????? ???? ?????? ???? ?????? ??????? ?? ??? ??? ????? ?? ?????? ??????? ?? ??? ?? ??”? ??? ???? ???? ????? ??”? ???? ?? ????? ???’ ???? ?”? ?: ??? ?”? ?? ??? ??? ????? (??? ?????? ???? ??? ?????) ??? ?????? (????? ?????? ?? ?????? ?????) ????? ??? ????? ??? ?????? ???? ??”? ??????? ?? ?????? ?????”? ?????? ??????? ?????? ?? ????? ??? ???? ???? (????? ??????? ????? ????’ ????? ????? ?? ???’ ????? ???”?)
L’chal hapachos, I think everyone I quoted would agree that Dorothy could not leave (maybe R’ Unterman could be construed as allowing it).