A control arm is one thing. A damaged strut and knuckle is something altogether different and not in a good way.
Damage to the latter two things means a hard hit.
There could be damage to the subframe and/or strut tower. You might look the strut tower (the part under the hood to which the top of the strut is attached) over very closely for any tiny signs of cracked paint. Cracked paint can be an indicator of severe head to the body shop time.
The fact they’ve been driving it means nothing and I agree; have a quality body shop look the chassis over.
If you want to do a rough DIY test which may reveal problems take a tape measure and measure from a common point on the front wheel to the rear wheel on the same side. Repeat the process on the other side.
If the tape shows an inch difference or whatever it might be best to run.