Tīngshuō lìngtáng zhùyuàn le, qǐng dài wǒ xiàng tā wènhǎo.
I heard your mother is in hospital; please give her my regards.
Tips
usage
令堂 is always the listener's mother, never your own: speaking of your own mother to others, you say 家母. The same polite set has 令尊 (your father), 令郎 (your son) and 令爱 (your daughter). All are formal; everyday speech says 您母亲 or 你妈妈.
