VIDEO: Tired-Looking Kate Gosselin Drops Off Birthday Twins To Bus Stop

It's been a stressful week in the Gosselin household with Jon and Kate publically trading barbs -- but Thursday, it's all about the twins as Mady and Cara turn 9.

Kate dropped the birthday girls off Thursday morning at the bus stop near their home in Wernersville, PA.

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The tired-looking reality TV mom refused to answer any questions about Jon; specifically paps wanted to know if she was worried he'd show up at the girl's birthday party and if she was upset Jon read her emails to reporters.

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As RadarOnline.com previously reported, Kate emailed Jon saying she wanted to restrict his time with the kids Thursday, in order to keep peace.

It was the first time this week that Kate had made the school run. Nanny Judy had been dropping the kids off all week while Kate was in New York and Jon was on his own media blitz in Los Angeles.

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Although production of Jon & Kate Plus 8 has been suspended, already taped episodes of the show continue to air on TLC Mondays at 9/8c.