The Bethenny Getting Married? star took to the ice alongside partner Ethan Burgess for 'Thrill Week', which required the celebrities to perform two risky moves.
She earned 38 out of a possible 60 points for her combined artistic impression and technical merit scores.
Writing on her Twitter account after the performance, she said: "You guys are the best!!!I LOVED our performance and had the best time.I gave it my ALL.I hope I made u guys proud!&i loved that outfit! (sic)"
She later added to one follower: "Personal best-that's all we can all ask for :)"
Frankel, who is competing against Jonny Moseley and Rebecca Budig following the exit of Brandon Mychal Smith, had earlier told fans that her only goal for the evening was to have "the best time" with her routine.
Skating With The Stars continues next Monday on ABC.
> Click here for our full recap of this week's performances