I really like Erin. Not so keen on Freya.
Other similar ideas that avoid the ee ending:
Ava, Aria, Ayla, Anya, April, Amber, Aurora, Anna, Alexa, Alyssa, Asha, Ada, Bethan, Beth, Bella, Cara, Clara, Carla, Cleo, Carys, Cerys, Claudia, Celeste, Celia, Dana, Daria, Delilah, Emma, Ella, Ellen, Eva, Evelyn, Eve, Eliza, Elsa, Elise, Edith, Erica, Eden, Esther, Etta, Enya, Ellis, Farrah, Fallon, Ffion, Flora, Fleur, Faith, Faye, Frances, Grace, Giselle, Georgia, Hannah, Hope, Hazel, Isabel, India, Imogen, Iris, Iona, Ida, Jasmine, Julia, Kate, Kayla, Keira, Livia, Leah, Lydia, Lois, Layla, Lyla, Lyra, Lola, Lana, Lena, Lila, Lara, Laura, Mila, Mala, Mika, Morgan, Nina, Nadia, Nora, Orla, Paige, Pippa, Quinn, Rita, Rosa, Rivkah, Rowan, Sara, Sofia, Stella, Saskia, Serena, Sabrina, Seren, Saffron, Sorrell, Tia, Thea, Tara, Tessa, Tamsin, Violet, Viola, Willow, Willa, Zara, Zia