I reckon they were older Wasn't Anthony at law school?
Michael's letter at the beginning of III was to
both of his children and I inferred that he turned over responsibility for their education to their mother well before Anthony went to law school.
Anyhow, irrespective when the children were left they were very young and no doubt needed their mother in their tender age especially in the unholy and evil environment, she was escaping from not knowing how long before she sees them again Ever
"Ever"?? The last we saw of Kay in II, she was ending a visitation with the children, who appeared to be about the same age as when we saw them at the Hotel Washington, when Michael bellowed, "You won't take my children from me!" Visitation rights are part of any separation or divorce proceeding, which I'm sure Kay--or Michael--initiated soon after that scene.
