She was all smiles on Friday as she led the family in cheering her party's return to power after a decade, but, according to informed sources both in Patna's power corridors and in the RJD, Misa Bharti led a rebellion on Thursday night on why she was being excluded from the new ministry.

No one at 10 Circular Road - where the RJD's first family resides - was willing to speak on the matter.

However, The Telegraph has learnt from informed sources that Misa, the firstborn of Lalu Prasad and Rabri Devi, questioned her father on why her two brothers - Tejaswi and Tej Pratap - were getting key ministerial berths and she was being left out though she was the first among the siblings to take the political plunge.

Tejaswi has been officially designated deputy chief minister and allotted the important portfolio of road and building construction. Tej Pratap has got the key health department.

According to highly placed sources in the RJD, Misa was so angry that chief minister Nitish Kumar had to be informed of the row and he intervened to calm her down with the help of his campaign strategist Prashant Kishor.

The RJD source, who requested anonymity for obvious reasons, said: "Last night there was a high-voltage drama at 10 Circular Road where Misa created a ruckus over not getting any ministerial berth in the new cabinet of Nitish Kumar. The situation went out of control and Lalu had to inform Nitish about it. Nitish, who was closeted in meetings regarding the ministry, tried to control the issue with the help of Prashant Kishor."

This is not the first time that Lalu has had to face a tantrum by Misa. During the 2014 Lok Sabha election, Misa had created a similar situation by insisting that she be made the candidate for the prestigious Pataliputra seat, which led Lalu to lose his most trusted lieutenant Ram Kripal Yadav. Ram Kripal joined the BJP, contested the Pataliputra seat and defeated Misa.

The 40-year-old Misa, so named after the draconian Emergency-era law under which Lalu was imprisoned during those turbulent years in the mid-seventies, had topped her MBBS degree exam with a distinction in gynaecology from Patna Medical College and Hospital (PMCH). She married computer engineer Shailesh Kumar in 1999 and is the mother of two daughters, Durga Bharti (12) and Gauri Bharti (6).

Her brothers are considerably younger - Tej Pratap is 27 and Tejaswi is 26.

The sources said that while a truce has been managed for the moment, the last act in this family drama is yet to be played out.