The Rani.
The Time Brain and other machines.
Ursula had a weakness, she wanted to know everything. She was greedy for knowledge, and even though she hated doing it she enjoyed making people do what she wanted. Ursula had her lab hidden inside the bloc, as she called the hanger where she'd stored the watch and the saucer and the other alien artefacts. The book and the palm computer had told her what everything was, and she'd taken advantage of the technologies.
The bloc was set up into rooms where she could work in peace. Her office automatically sent messages into her labs, so she could exist them without anyone being any the wiser.
Contained inside one of the labs was a massive sphere that contained a glutinous liquid, and next to it was a computer station that transmitted information to the saucer so then she could process it.
The Time brain was on all night, sending information into her computers, just waiting to be checked and recorded.
Through the Time Brain, Ursula had worked out how to create wormholes, and in the safety of her laboratory, she managed to create one that was permanently stable. Wormholes didn't need exotic matter. Her research project into wormholes showed her how to create wormhole reactors that provided potential power, but the file said they could and world make nasty weapons that would completely destroy a world, bleeding it through to other dimensions.
Through the Time brain, she learnt how to create pocket universes, creating larger on the inside constructs. If she was going to build a time and space machine, then she would need to develop a highly advanced power source, and Ursula found it when she researched astronomical phenomena. According to the Time brain, a race known as the Xeelee had found that a beam of light sent into the ergosphere of a black hole would go round and round and round, gaining energy as it did, and a near magical power source.
Ursula also discovered how to create a black hole, and create a pocket universe around it and contain it's harmful energies. She experimented with computer models to work out how to create a dimensionally transcendental time and space machine that would be powered by this black hole without any nasty sideeffects.