Or embrace the madness.
It may not be what you planned, but if the players are interested, I say run with it. Especially if they're getting invested in the character, use that momentum.
As the GM, you don't always know which characters are going to matter. When I've GMed in the past, I've had random nameless mooks on the players' side roll ridiculously well, and the players started taking interest. "Well, congratulations, Ganger #3. You have a name now."
Just because this wasn't meant to be a prominent character doesn't mean it can't be.
That said, the AI can have its own hangups. Also, AIs don't necessarily get along well operating in the meat world with its weird things like 'friction' and 'gravity' and 'explosions.' The AI may currently be uncoordinated to a point of utter incompetence that can't be overcome quickly if it jumps into a drone body right now.
Alternately (or, better, additionally), the AI may have a powerful interest in the real world and in people, but if it goes to the real world, wants to do it as a person. Not a tank. Being a steel lynx or a flyspy or a rotodrone is disgusting and utterly unacceptable. If they want it to travel around in the real world, it would take at least a rating II iDoll, if not class III or IV. I'm guessing the team doesn't have a class III iDoll lying around. And if they
do have one they'd be willing to give to this AI, or they're willing to go out of their way to get one? That's a sign that they
really want to build a relationship with this AI, and
that, my dear, is investment!
And now I'm picturing an adorkable romance between the PC and the naive AI taking his/her first steps into the real world in this pretty little iDoll body.

Consider your options. This interest is not necessarily a bad thing.