Definitely not laying eggs. Red-bordered Pixies lay their eggs solely on members of the pea family. I think your butterfly is doing something decidedly less romantic than laying eggs....
however, you are lucky to live in the right part of the country to have Red-bordered Pixies and all of the other border butterflies.

I have common members of the pea family in my garden - Acacia farnesiana, Caesalpina pulcherrima, Sophora tomentosa, etc. I looked up the plants for the pixie, and found they lay their eggs on the guamachil tree. I had never heard that name, so I looked it up -- and it's the tamarind. And I just happen to have that also! Thanks for sending me looking.
Diana