I don't believe he or anyone else said at the trial "My daughter could not be here." He just said he had a daughter named Barbara and there was a strained pause after that.
I am almost positive that ayres said something very close to "unfortunately she could not be here" at the beginning of his testimony. I have the phrase IN QUOTES in my handwritten notes. I normally only use quotes in my notes when I've deliberately ignored subsequent statements to attempt to accurately record a specific and interesting statement as close to verbatim as possible.
I have a distinct memory of it being somewhat like an aside, or that Weinberg may also have been saying something over the top of him at the time. In fact, I'll print the statements from the transcript below, and you'll see that Weinberg changes the subject immediately after ayres mentions his daughter, and I think that ayres was continuing to talk about her during Weinberg's question. Weinberg always interjects "Okay" when he means: "Shut Up."
I think that the "strained pause" you may remember is because as he introduced his wife and son, they each stood up in turn, looking happy to be with ayres, and there was a definite strained feeling in the air while everyone glanced around to see if Barbara was anywhere to be found.
There is also some other interesting info in his introduction to his family. I believe when ayres says "in utero" he may mean "stillborn," or no longer living, or something along that line, OR he IS referring to Robert, but he's called his son by the wrong name:
Weinberg: You came to San Mateo in 1963?
ayres: 1963.
Q: With your wife?
a: Yes.
Q: And her name is?
a: Solveig s-o-l-v-e-i-g, which is a Norwegian name. And my son, who was in utero,
Dave, came along.
Q: Not by choice. And are you still married?
a: Yes.
Q: You have children?
a: Yes.
Q: How many?
a: I have two.
Q: And their names?
a:
Robert is the eldest, and Barbara is the younger one.
Q: Okay. And you worked initially for San Mateo County. How long did that last?