I'm so far behind. I've been under the weather and had family over yesterday, but trying to catch up. The odd sense of humor. I have a bit of an odd sense of humor, I'e been told, as does a sibling. Maybe DT is Nikola Tesla fan and liked to discuss different ways of harnessing light into a new light bulb. I think that's what we also see when she, or he, cracks wise with the obgyn, back in TX, and comments that they'e missed her, and her staff, and had "no desire to reproduce" without her (loosely quoted). I'm going off track a bit, but, if you'll note, while in TX she had a child almost annually! That obgyn had to almost be like a friend.
The first child came in 1988. Then, there was a lapse. Then she had a child in
'92, '93, '95 ,'97 based on birth certs on file. Below are guesstimates by OP based on ages.
'98, '99, 2000, 2002, 2003, 2004, 2006 and, finally, in 2015, the only child born in CA.
From what I've read, the children were not held captive in TX. They were kinda Free range, but kept close, though. I have a theory that mom was happy while expecting a child, and, while the new child was an infant. It seems that the shackling and starving and actual torture type of conditions, didn't begin until around 2010. This would coincide with four years and NO successful pregnancy and NO infant. DT may have gone into a huge downward spiral. Hence, the recent Vegas Vow renewals, every two years. Hoping it would spark something? It could have even been his idea, in an effort to get her amorous, and ultimately, pregnant and happy. (Weird I know, but, some women love to be pregnant. I'm not one of them though.)
It would also explain why, in 2011, when DTs parents and brother visited, the kids may have seemed thin, and somewhat small, but didn't look, like they apparently look now, 7 years later, which was horrible enough to cause hospital staff, to start weeping. The T.s could have brushed it off as allergies. I've seen some thin kids who had severe allergies.