I'm so sorry you didn't get conclusive results. I'm sure it doesn't make the whole thing any easier on you.
This is definitely the hardest part of keeping pets, but the time we do get with them is special and never to be forgotten.
Please try to keep your chin up. You're a good snake parent and Kallari was lucky she was able to share her time with you, albeit too short.
R.I.P. sweet snake