I think my GF is using crack

So I asked to come over to my GF's house which I'm not allowed to do bc she said she lives with 3 other people and one of them is very private so I respect that. I been dating her 3 months. So I asked her again and she said yes. Got there and was shocked to see no one else lives there. So I ask her why she said 3 other people live there. She said she had a roommate but they moved out. I asked when and she said 2 weeks ago. I asked why she didn't tell me and she said she didn't know how. I asked why she couldn't or she wanted to keep it a secret and she said both. So I was like OK. Then I noticed she had a light fixture upside down on the table and ask her what's that. She said she took it down bc she wanted to resell it. I asked if she's been selling stuff and she said that and other things. I asked what she meant and she said she resells items. I asked if she been stealing things and she said yes. She admitted to taking the light fixture and a picture of an owl bc she loves owls. I asked if she was in financial trouble and she said yes. I offered to help her bc I'm in a good job. I told her to stop stealing bc she'll get caught and I'll help her. She became upset and said she had to admit something to me. She said that she had a shopping addiction and she stole but has been sober 7 months. But she looked high so I asked her if she was high. She said yes. She had a joint in her hand and looked super dazed. I was like is that weed. She said yes. I asked her if she was sad and wanted to smoke to feel better and she said no. She said she had to admit something and she had been using drugs for 3 months. I asked if she meant weed and she said no. She said she's had been using cocaine. I asked if she meant crack and she said yes. I asked her if she had one on her and she said yes. I was like where and she pointed to the light fixture. I lifted it up and there was crack, a pipe, and a needle. I couldn't believe it. I asked her if she had been using it while I was there and she said yes.<br><br>I asked her if she was gonna be OK and she said she hoped so. I said I was gonna get her some food bc she was probably hungry and went to the kitchen. I was thinking about calling 911 or the cops but she was gonna be OK. I heard the front door open and close and came out and she was gone. I called her and she said she was gonna her friends house and I wasn't welcomed. She said she would call me later and hung up. I called her again and she said to stop calling her. She said she was gonna block me and I said please don't. I asked her if she was gonna ruin our relationship bc she was mad and said yes. She said she wanted to be left alone and I said OK. I left and went home.<br><br>I called my mom and told her what happened. She said some mean things about my GF. I said I hoped she would get better and my mom said she hoped so too. I asked her what I should do and she said I should move on. I asked if she really thought my GF was that bad and my mom said yes. I asked her if I should give her a second chance and my mom said no. My mom said she was addicted to crack and was hopeless and was using my dad and I for money. I asked how she knew and she said my GF told her. I asked when and my mom said a few days ago. I asked why she didn't tell me and my mom said my GF told her not too. My GF told my mom that I was ignorant and didn't know how to do anything on my own and she needed to take care of me. My mom asked if that was true and I said no. My mom said my GF was taking advantage of me and I said please. My mom said she kept calling and asking for money and I said really. My mom said yes and I asked why she didn't tell me. My mom said she wanted me to find out myself.<br><br>So now I don't know what to think. I think my GF is using crack. But I also think she would stop if she got help. I don't know if I should give her a 2nd chance.