Stroke? Aneurysm? Or just drunk?

My Ma fell over earlier. She drinks two or three times a week, and I've never seen her fall over. My step-dad says she was fine one minute, and he left the room to fix a drink. When he came back in, my ma was on the floor with blood coming out of her mouth. She seemed dazed and was not really sure what happened. I came home about five minutes after she had fallen. He had her on the couch, and she seems ok - but her speech is slurred and she refuses to go to the hospital. My stepdad mas a nurse in the airforce many years ago, and he took her pulse, which seemed very faint, but otherwise normal. About an hour has gone by. She has a black eye, and her speech is still a little slurred, but she seems normal otherwise. She can walk and move around. She says she feels fine, that she just had too much to drink. But she still doesn't remember falling or why she fell. I'm afraid that she may have had a stroke or an aneurysm, but she sternly refuses to leave the house, and I can't really afford to have an ambulance drive over here for nothing. Just looking for some advice, as I'm not sure what to do. She is 50 yrs old, and is in good health. She drinks a bottle of wine two to three nights a week, and drink rum mixers occasionally. I've seen her drunk before, but this is different. Should I be concerned?