Just over a week after her husband's tragic death, Jill Zarin has been holed up in her apartment and sources tell RadarOnline.com exclusively pals are worried sick over her.<br /><br />As readers know, Bobby Zarin died on January 13 at age 71 after a long battle with thyroid cancer.<br /><br />Insiders reveal the Real Housewives of New York star "hasn’t left her apartment since Bobby died and friends are worried because she is taking it so hard."<br /><br />Bethenny has been there to support her since the passing, they’re in touch frequently."<br /><br />her former reality feuds after her hubby's heartbreaking death.<br /><br />She even invited infamous ex-enemy Bethenny Frankel, 47, to Bobby’s funeral.<br /><br />“Jill feels that life is too short and holding onto hate and ugly feelings just isn’t worth it,” a source noted at the time.<br /><br />laid her deceased partner to rest.<br /><br />“Dedicating the grand finale to the loving, fun & colorful Bobby Zarin #RIP,” Frankel captioned an Instagram video of exploding fireworks as a tribute to Bobby.<br /><br />Also in attendance at the funeral were Sonja Morgan</a>, Aviva Drescher</a>, Dorinda Medley</a> and Kelly Bensimon</a>.<br /><br />PHOTOS: Bethenny Frankel Shows off Bikini Body With Her Boy Toy</a><br /><br />The source revealed Jill's considering "traveling with friends" or "visiting her daughter in London" to help her cope with the devastating loss.<br /><br />Bobby died on January 13, 2018 after spending months in and out of a New York Hospital.<br /><br />We pay for juicy info! Do you have a story for RadarOnline.com? Email us at tips@radaronline.com, or call us at 800-344-9598 any time, day or night.