I wear two rings on both hands. You could just talk to her.
Do women (younger women) usually wear a ring on one hand if they're single? I have a crush on this one girl at work and I noticed there's a ring on one of her hands.
Wearing rings (other than an engagement ring or a wedding ring) has no significant message .. It's just jewelry .. Much like necklaces and ear rings
just wearing rings doesnt determine if a person is in a relationship or not, you might want to ask her or maybe spy a bit to check that out!