What is considered to be a reasonable force when trying to evict a trespasser from your house in Canada?

Recently she lived at my house for 3 months and 3 weeks between February 6th 2020 and May 20th 2022. Prior to that we lived together for 1 year and 5 months, between October 1st 2019 and January 03rd 2021. Back then she left on her own.

We resumed an on and off relationship between August 14th 2021 and November 10th 2021. She often stayed at my house but would come and go as she needed.

Against my better judgement i've concluded that she needed a place to stay, in February 2022. The relationship resumed shortly after she moved back in. I've considered it a relationship because of its context - she engaged me intimately and we've talked about future plans, such as travel and we shared ideas about owning a larger house at some point on the account that she has 3 dogs.

Hopefully she won't make any claims to my house. Can she do it retroactively ?

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