Widow sell property

My father passed away in July 22. V are 2 sisters n 1 brother. I am (47 yrs)the eldest,married n settled ,my brother(43 yrs) is also married n stays in a rental flat in kandivali west. Younger sister (45 yrs ) has been staying with parents, but she has been physically n mentally torturing my parents. Around 6-7 NCS have been registered against her at police stations over a period of last 15 yrs. My dad owned an independent mhada House in charkop kandivali west mumbai.this was solely in my dad's name.we have got the name transferred to my mom in mhada.2 months back my sister had assaulted my mom therefore i n my brother decided to shift mom out of her own house.mom is presently staying with my brother. Due to this unacceptable behaviour of my sister , my mother does not wish to give an equal share of the sale proceedings.my question is that can my mom sell this house without consent of my sister. I and my brother are willing to give consent for selling this property. Please note my dad was a govt pensioner therefore it's also important for mom to sell this property as she cannot maintain independent bunglow/ row house in the half pension she will get now.