The late L’Wren Scott’s sister is lashing out as Mick Jagger for moving on so quickly after the fashion designer’s death in March.

When photos surfaced over the weekend of the Rolling Stones frontman with a mystery brunette on the balcony of his hotel in Zurich. , a friend confirmed he’s having a “fling” and trying to move on with his life. He reportedly met the woman at a nightclub after one the band’s concerts.

“Of course Mick is still sad over L’Wren but he is working through it and trying to move on with his life. Yes, he had a fling – he’s a red-blooded man for goodness sake – but it’s nice to see him enjoying life again,” a source told Daily Mail. “He’s on the mend.”

However, Jan Shane, Scott’s sister, condemned the rocker for having a tryst with a new woman to Daily Mirror.

“And people wonder why L’Wren was so depressed?” she said. “These pictures make me really wonder what Mick is really thinking and feeling. His daughter says that he is still heartbroken and so devastated about losing my sister. And then you see these photos – he will never change."

She went on to say she’s happy she’s “not hurting in any way” now in heaven with their parents.

The Rolling Stones are currently touring again after canceling dates in Australia and New Zealand after Scott’s death.

image via Peter West/ACE/INFphoto.com