I think there may have been a mix-up in a previous post as to what exactly those texts said. Here they are taken directly from testimony (and my notes in red):
FEBRUARY 13
12:12pm
RS: Baba I hope you dont mind but I came back to the house to work and do some washing. It will help me a lot to get stuff done and relieve some stress. Ill go through to Joburg at like 3pm.
(she is planning on going home) 

13:10pm
RS: Its a difficult thing to try to console you baba because its a ****** thing and youre a nice guy. I guess these things happen and we can just hope they work out for the best. You are an amazing person with so many blessings and you are more than cared for. Your health and future monetary blessings far outweigh this hurdle I can promise you that 
OP: Thank you so much my angel you dont have to
(I believe he means you don't have to console me). X Stay tonight if you would like.
15:21pm
OP: Im just finishing off at Ryan(?)
RS: Thank you baba let me know if youd like to spend time with him or Carl. Im sure you maybe feel like some family tonight.
She is suggesting that he spend the night with family
15:46
RS: Angel Im going to go home at like 6pm.
(she's still planning on going home) Please stay and do whatever it was you were gonna do
(she suggests to Oscar that he stay where he is and continue to do what he's doing... again, indicating she did not want to stay)
And then her cell phone pinging has her outside of his community as of 5:45pm... she had left... but then we saw her drive back in around 6pm. And he pulls in about 10 minutes after her.