I was recently given a 3 year old female leopard gecko. She spent her entire life with another gecko, who was her sister. The other one passed away and a man gave me this one. When I first got her, she seemed very quiet and lonely. I could only get her to eat by hand feeding. Now she barely eats at all, even by hand. I am very worried that she is sick, or lonely since the loss of her sister. I am wondering if you think it would be best to introduce her to another gecko. I can order one in and have it in a few days, but I don't want to make any mistakes. My supplier doesn't have any bigger ones, so I only have access to babies.