In 2009/2010/2011 I saw this movie on w network
I just saw the ending and I want to know what movie is

In the ending a lady who wants the mother killed comes in the house and switches the medicine so the mother would die but when the mother comes in the house she doesn't take the medicine and the lady forces her but she won't take it

Then...

The daughter is outside with her boyfriend hanging out in his car until she see's her mother on the video camera she installed in her mothers room so she quickly calls 911 and says the address and the daughter returns home and the mother says

" I owe you my life."