Hoofer Steps is unable/willing to conceive her own children due to wanting to keep her physical appearance to train and engage with her young dance students. That, and lack of having a mate. She's always been a lone star, not wanting to find companionship in another. She instead devotes all of her love and attention to her students and dance studio.
That is until her friend Mayor Mare mentioned to her the two children currently residing within the orphanage; a small Pegasus stallion who'd been in their care since a colt and a newborn pegasus that was left with them the prior month; barely a newborn.
The two boys seemingly had an unspoken bond that even they didn't understand. The older colt refusing adoption without having the small pink bundle included in the family as well. Hoofer was entranced by the colt's dedication, and had tugged at her motherly instincts that she'd sworn to her students. With a week's worth of consideration, Hoofer returned to the orphanage to adopt the two boys and officially stepping into the world of motherhood.
Little Lamp Light and Bashful Light were brothers until Bashful reached the age of 6 when the small pony jumped immediately into the art of ballet as soon as they could to Hoofer's delight and quickly became her prodigy student (all mother's consider their children prodigies, right?)
Though enrolled in a male ballet course, Bashful Light usually wanted to attend the classes that instructed the young fillies; always drawn to the large, elaborate tutus and more feminine attire used for their routines. Hoofer Steps wasted no time in enrolling her foal into the other course, watching them thrive as they were now in an environment that better fit their personality.
Not soon after, Bashful Light slowly began asking their mother and friends to refer to them as Balletomane instead of the more masculine name "Bashful Light". This quiet transition did little to harm Balletomane but it did warrant bullying around the school.
Doing little to interfere with their self discovery, Hoofer simply allowed their child to grow. Balletomane was now seemingly the little sister of the family.