WTB: XS or XXS adult MTB

Hey everyone, I am looking to see if any one has a XS or XXS Mountain bike they would be willing to sell or even lend(if your willing).

It would be for my fiance and she is only 4’ 10"

Not looking for anything to fancy as this is going to be for us to use for a few months as she figures out if MTBing is something she might be interested in as a hobby.