Practically that would be very likely to be the case to the reader, but grammatically no, it's still ambiguous. > They went to Oregon with Betty, a maid and a

Practically that would be very likely to be the case to the reader, but grammatically no, it's still ambiguous. > They went to Oregon with Betty, a maid and a cook. Betty could be both a maid and a cook. So there is still ambiguity.