Second defendant not appearing in civil case

state to the court any valid reason to not present in court....with cause may be court grant non presence.....

so for this please get assist with local lawyer,he may advice for actual facts and reason

Inform the court that your mother is unable to lead evidence if they need let they take commission and submit evidence thru commission who will come to spot and record evidence in residence where your mother resides.

It's possible cross can be done in your house.

You have already engaged / paid an able, competent and intelligent lawyer who is well aware about the facts and circumstances of the case, follow him/her as advised without wasting your precious time and efforts for obligation of experts (although it is available FREE OF COST) on the basis of limited facts posted by you.

If you have lost faith in your lawyer it is advisable to change him/her immediately and engage another local prudent lawyer for better appreciation of facts / documents, guidance and proceeding.

In my understanding, the plaintiff cannot compel the defendant to lead the evidence. It could be a different matter if the plaintiff summons the defendant as his/her witness.