Exactly one month to the day after 6-year-old Jasmina Amena succumbed to leukemia, her mom Thea took to her Twitter page to lash out at singer Rihanna.

In a tweet posted today to the social networking site, Thea wrote:

It has been a month since Jasmina’s passing. Still not even a card or text message from Rihanna. Did she use my child for a publicity stunt?

It was Rihanna, who, along with other celebs, pushed Jasmina into the spotlight by publicizing her urgent need for a bone marrow donor.

Jasmina passed away on January 27th.

Thanks to loyal reader Nioka for the tip.