Sorry, I only just read your post abut your routine. That sounds fine to me. I don't think you're trying to put her to bed too early. But she is in the pattern to eb going to bed later, as others have said, try and change that pattern slowly. It might take you a month to get to your desired bedtime of 7:30. Don't rush her, otherwise it probably won't work.
Have you tried singing to her? I really really really can't sing. But DD loves it when I sing to her. I can then slowly leave the room and the sound reassures her for a little while longer...
Or have you tried music? Between 6 and 12 months, music made DD feel like she's not alone.