Thanks everyone for the prayers and support.
For people that have asked, Ryleigh is being treated at St. Jude, and Leann is at Children's Healthcare of Atlanta.
I have been communicating with my sister all morning via text...last I heard Ryleigh was still in surgery, with the expectation surgery could last another 1.5-2 hours or so.
Leann now has a tenative transplant date, so we are excited and nervous all at the same time. If everything goes as planned, she should get her sister's cells on February 21st.