Do you think she is losing interest?

there's a girl who wants me for a long time. Few months ago we got closer. After like month I asked her out and she said yes. We kissed two times. The second kiss was last week and things were absolutely fine. But this week we were at a birthday party of our mutual friend. She was all the time with one of her female friend and we didn't spend much time together. I spent a lot of time with her two best friends. They were always pushing me to pursue her and they want us to be together and always said she likes me. But now i asked them where she was at that moment and they told me they dont know and kind of asked if i shoudnt let her go. I asked them why and they were saying that she's complicated and stuff. So i asked them if she lost interest and they said they dont know. Then they said that they think i am a right guy for her but they dont know if she knows it. We were not out together yet cuz one of us was always busy and i spend some weekends in work. And when i asked her if she really wants to go and she said yes. So i am completely confused. I think her friends didn't say it like for fun or something cuz i know them well and they really want us to be together so i think they are not messing around. What do you think?

Do you think she is losing interest?
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