LEOS PLEASE HELP ME

I'm a Capricorn woman and she is a Leo woman

We met online, went on our first date.
Things between us got intimate on the first night. (: (I love ya'll Leo women) lol.
Well everything was going right....until I realize I left my phone in her car. :/
I told her that i left my phone in her car, and she went through it. (at least I was assuming at the time)

I was texting this one chick (a sagg girl) before me and the Leo chick met up that day.
We had a date around 5:30pm but she din't show up until 7:30pm.
I got kind of mad and started texting the sagg girl.
well Leo saw a txt pretty much saying that the only reason why i'm meeting up with her is because she is coming to see me. (i didn't mean any harm by it HONESTLY!)
I was only trying to make the sagg girl feel better because she got upset abt me not meeting up with her.
&& that's because i'm not interested in the sagg girl.

Two days of texting her and she has gone MUTE!
I felt a little weird about it all.
So the next day she texted me randomly going off about what she had seen in my phone.

She told me how she never wanted to speak to me again and how i'm like everybody else.
She did offer to bring my phone, but she ends up standing me up.
I know Leo's are serious about loyalty and trust.
so i was thinking about going by her job buy some roses/teddy bear and writing her a poem sincerely.
I just wan't to prove to her that i'm sorry and that i'm different, and that she has my attention.
I'm so lost i really like this leo girl and idk how to get her back. Or if i could anyway. :/

What should i do——?