In
America, this is primarily an African American name, and I personally have encountered it in three different sibsets/twinsets with the sibling
Aisha (yes, twins
Aisha and T'Aisha. Ick.). Sometimes it's spelled T'Ayesha, Taiyesha, Tiyesha, or Tayesha; spelling usually is linked to how sib's name
Aisha has been spelled.
It's reasonable for this to be an honoring name for you, especially if it reminds your best friend of you.