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Valentina was choosed for political reasons. She was humble textile factory worker and soviet party official. There were better woman candidates, but they were ignored due to their education and more aristocratic family. Valentine was selected by Khrushchev. She was not a very good astronaut.
> If ground control had not succeeded in sending and installing a new computer program, instead of returning to Earth
There was semi-automatic landing. Vostok was capable of landing unmanned without a pilot. But there was problem with engine orientation (the same problem destroyed first unmanned mission). They eventually fixed the problem and landed in automatic mode.
Manual landing was for backup, if automatic failed. But Valentina did not took flight well, and could not even describe manual landing sequence over radio. Mission control spend big part of mission explaining how to do manual landing.
> She said she was sad so few Russian women have followed her into space, none at all for one 19-year period, but more were now being trained: “I think the attitude to women will change – do you hear me?”
This was her fault from big part. Soviets planned more women after her. Ponomarevová and Solovjovová would fly in a Voskhod 6 at the end of 1966, while Solovjovová should climb into space.