08/09/2014 AT 02:50 PM EDT
is getting back on top.
The reality star is moving forward
after meeting with divorce lawyers, and she's sending the message loud and clear.
Wilkinson, 29, wore a T-shirt emblazoned with "IM NOT SORRY" while out and about Los Angeles's Studio City neighborhood Friday. And the accessory she didn't
wear – her wedding ring – spoke even greater volumes.
In July, the former Playboy
model was rocked by rumors
that husband Hank Baskett had an affair – while she was pregnant with their now 12-week-old daughter, Alijah Mary.
And a friend tells PEOPLE that wasn't the first time the retired athlete had strayed.
"The cheating happened another time a few years ago, but she forgave him that time," a source close to Wilkinson says. "This time it blew up, and there's no turning back."
Now, the mom of two is healing with some fun, going out with girlfriends
for dinner and dancing.
And though Wilkinson and Baskett continue to live together to care for Alijah and 4-year-old son Hank IV (while still filming their show Kendra on Top
), the source says there's no fixing their five-year marriage.
"Once your trust is demolished like that, and it's happened more than once, there's no turning back," the insider says. "She's so devastated but is being super optimistic."
Reporting by MELODY CHIU