The former mistress of John Della Bosca, Kate Neill, says she "freaked out" when she saw his wife, Belinda Neal, sitting on a park bench near her Newtown unit.

Kate Neill had a six-month affair with Ms Neal's husband, the then NSW minister for health, in 2009.

'I feared Belinda Neal' ... Kate Neill. Credit:Simon Alekna

Last week, the Downing Centre Local Court heard that, in April this year, the two women had a spat outside the Chill Cafe on King Street, Newtown.

Ms Neill, who has applied for an apprehended personal violence order against Ms Neal, a former federal Labor MP, told the court she became scared and "got the heebie-jeebies" when Ms Neal began following her.