Help me

I’m a M(15) and I went to a party and I met this girl who’s a F(17) that’s a friend of my friend and I see her around all the time but I got the courage to talk to her at the party and we just hanged out tg for the rest of the night and now it’s 2 days later and I want to go back to that night and I’m scared to msg the girl and seem attached but I really like her and my mom does too so she’s okay with it but i just keep on thinking about how she has way better guys than me and I’m just very depressed about the whole thing and need advice