Sensenberger, 26, has been charged with uttering threats and mischief after an encounter with police in February.
This latest incident follows an August 2014 confrontation at an Ottawa medical clinic. She was charged after allegedly attacking two women using a hand-held fan and lit cigarette, The Ottawa Citizen reported.
She later failed to show for a court appearance and a bench warrant for her arrest was issued in September 2014, according to court documents cited by The Ottawa Sun.
The warrant, however, wasn't executed until Feb. 22, when paramedics arrived at the home she shares with Zimmer in Ottawa's tony Rockcliffe Park area.
At that time, paramedics were called to help the 72-year-old ex-senator with a health issue, but they notified police about Sensenberger, who reportedly appeared drunk and threatened three police officers while holding kitchen knives, The Citizen reported.
She was charged with uttering threats of bodily harm, and she faced an additional charge of mischief after allegedly damaging the window of a police car while she was being arrested.
Sensenberger has also been charged with breaching her conditions, after she received a suspended sentence following a 2012 incident on a flight from Ottawa to Saskatoon.
One of those conditions was that she not consume alcohol, the Sun reported.
She is out on bail.
The plane incident brought her to national attention after she allegedly threatened to slit her husband's throat. She later pleaded guilty to causing a disturbance on a flight, and was directed to seek counselling.
The Sun reported that police were called to the couple's Ottawa home again last week after four men allegedly broke in and stole 27 firearms. No one was home at the time of the break-in.
Zimmer resigned from the Senate citing health concerns in 2013.
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