Advice?

I feel so frustrated, and i get really mad when people just use Islam as nothing but a name. They call themselves Muslims, even though they don't pray, they don't fast, they don't read Quran, they don't even KNOW what Islam really is. My friend, who's name I'm not gonna mention is exactly like that. And by saying this I am NOT NOT NOT backbiting, or talking about her, but i just need advise from you guys... Anyways this girl is "Muslim" at least that's what she calls herself, but truly her only connection to Islam is that she doesn't eat pork....She says she's Muslim, and at one point i was tempted to ask her how she was 'Muslim'. So this girl and I were having a conversation that happened to be about Valentines day...it was something like this:

Me talking is blue and her talking is red okay?

"Hey I was about to buy this little stuffed animal that was holding a heart that said 'be mine' on it."

"Aww that's really cute"

"Yea but I asked my dad if i could get it and he said ABSOLUTELY NOT."

"Oh..that's okay!"

"Ya my dad is mean...he said that since we were muslims we shouldn't worry about love, but i was like COME ON dad!"

"Ummm..."

"I mean it's not like I was gonna give it to a boy or something."

"uhh..."

Ok anyways there's more to this conversation but I'm gonna stop right here and comment about a few things....ok first of all when she say that we're MUSLIMS we shouldn't be worrying about LOVE, I just wanted to point out that this girl DATES BOYS so she's not the one to be talking...and again I'm not judging but it just really bothers me how some people use Islam as only a label and fourget that they have responsibilities to put up with as well... and when she says that 'her dad is mean' she's just pointing out the fact that he wont let her go to parties or whatever else and doesn't let her wear tight jeans even though the ones she wears are tight enough.... but anyways God I was so tempted to ask her just exactly how she prove herself to be muslim but of course I didn't. Wow...was i pissed off at the conversation because I hate how she said muslims but when it was Ramadan she made fun and said she couldn't fast because of 'helath issues' even though I KNOW KNOW KNOW that she is perfectly fine but she decided that she hadn't felt like fasting so she didn't, and then if that's not bad enough she used to take out her freezing cold water and drink it infront of my face even though she KNEW I was fasting, and sometimes she'd lift up my hijab and take a "peek" at my hair infront of everyone, and she'd go all like I'm sorry on me when I'd get mad at her for doing that. I mean if it was someone non-muslim and didn't really know then I wouldn't care but calling hersefl muslima and doing that to me just made me have all the reason to be mad at her...
Anyways in conclusion I want to ask you what you would do if you were in my place, I mean I really want her to understand what Islam REALLY is, but I don't want to seem like a teacher and offend her, but at the same time I don't want to just leave her hanging like that...so any advice you have I'd be grateful to read...
And thanks in Advance