Is my grandmother having with these guys?

Okay. My grandfather ped away 5 - 6 months ago now. I was living with him before he died. My STEP grandmother left him for years and only came back recently before he got sick (She kind of on and off left him to live on her own for years). After he died I had to leave in about a month or so. So I left, and I went back a month later cause I forgot some things and these two burly middle-aged guys moved in with her as her "room mates". The thing is, the house only has two bedrooms. They seemed like real low-lives. When I went upstairs to ask my grandmother something one of them goes "Who the hell are you?" and I go "I'm her grandson." he goes "I don't care who you are. I don't know ya. You're a stranger to me." He looked like some biker guy or something, had an old beat up Ford pick-up trick in the driveway. It's quite sad. My grandfather did not live cheaply. It's like moving some bum into the Playboy Mansion or something. When I first called her to let her know I was coming over she referred to them as her "boys" trying to think whether she meant that jokingly or literally.... Thoughts everyone?