Britney Spears' mother Lynne Spears supports her daughter's decision to pick her own legal representative.

Spears backed her daughter and filed a petition for permission to hire private counsel after Sam Ingham, the singer's court-appointed lawyer for 13 years, resigned.

Lynne Spears said Britney Spears now had a "different capacity" compared with the beginning of her conservatorship in 2008.

"This motion to appoint private counsel is of the utmost importance and may very well impact each and every of the other requests submitted by (the) conservatee in her live testimony at the June 23 hearing," the court document obtained by People said. "It is self-evident that before the court addresses, for example, the termination of the conservatorship, (the) conservatee must be allowed to consult with counsel of her choosing."

Lynne Spears said Britney Spears' court appearance and speech was "very courageous." She added the 39-year-old star could now care for herself, perform, choreograph and even earn hundreds of millions of dollars as an international celebrity.

Britney Spears has asked to end her conservatorship. Her mother said the performer needed to choose her own lawyer.

Joint conservator Jodi Montgomery claimed harassment and death threats had increased after Britney Spears' latest court appearance, NBC News said. She said there was an increase in the number and severity of threats she had been receiving.

In her filed court documents, Montgomery asked the conservatorship to temporarily cover the costs of her increased security measures - citing a whopping amount. The two-week security detail would cost around $25,480.

Montgomery's lawyer noted in the filing that the said the price is "prohibitive" and Britney's conservator of the estate, her father Jamie Spears had approved her request. The patriarch only wants to make things legal, so he did not authorize it himself.

The court filing also includes a screenshot of Britney's, named Jane Doe, texts to Montgomery - asking her to stay as her co-conservator and assistance to get a new attorney. Montgomery said she would not step down as Britney's co-conservator - knowing she wanted her to remain.