I’d venture to guess that she’s smoking pot for similar reasons you ride the bike. It’s her escape from something that she doesn’t like. For the hour or whatever she is high, she isn’t thinking about her friends in NY or whatever she misses. That’s partially why I did it when I started in high school, but I was dealing with a whole lot more than she is, lol. It was also something I did with friends, but we did it without driving so it was actually fun. 4 or 5 close friends sitting around stupid giggling with no hangover in the a.m. My .02
Oh, wait til you see the pile of parts I’ve accumulated in the basement…