After a patchy first set, the Belgian 11th seed raised her game to advance in 75 minutes.
"The second set was much better," she said.
"In the first I was definitely struggling to get a feel for it. It felt like a long break as well, I had a day off yesterday and a night match today so I had to find my aggressive footwork.
"But I was able to win the important points and when you aren't playing well it sometimes comes down to playing the important points well.
"The second set was much better and I am pleased I finished better than I started."