A 39-year-old resident of Southcity-II was critically injured when her neighbour barged into her house on Monday and attacked her.
Doctors at Max Hospital in Sushant Lok, where she is admitted, said she has developed three blood clots in her brain.
Rekha Bhardwaj (39) said she was in her ground-floor house with her six-month-old baby on Monday morning when her neighbour Ram Dev Sharma, reportedly a CEO of a company, barged in.
Her husband, who works with Hero Honda, said the family had had a tiff with Sharma about two months back over some broken flowerpots.
The police have meanwhile started investigating.
Sharma, meanwhile, is missing since the incident.