Legally, you are not liable for what someone does with property which you loaned them innocently, since you lacked criminal intent or "mens rea." (To commit a crime, you need wrongful intent as well as a wrongful act; for example, if I pick up your briefcase because it looks like mine and I thought it belonged to me, that is not a crime--but if I took it knowing it was yours and intending to take your property, that is a criminal act.) You would only face criminal liability if there was some reason to believe that you knew or at least had a reasonable suspicion of what she would do with the life, and gave it to her to facilitate her vandalism.