The striker signed with the Spanish team early in February.
Seoposenwe confirmed her exit from the team on her social media account Twitter on Wednesday, 1 June.
“Yesterday (Tuesday) was officially my last day as a @RealBetisFem player. I want to thank Betis for the opportunity, I sincerely appreciate it. I wish the club nothing but the best.
“Onto the next chapter of this book called LIFE I go,” the striker tweeted.
The Banyana striker made her debut in Spain for Betis against RC Espanyol in a 2-1 loss.
However, the following weekend Spanish Primera Ibredrola was brought to an early end due to the coronavirus with the striker having made only three appearances.