Mom eats only solids, refuses to drink liquids. What can I do?

Just to add another thought. could you try a travel mug?

I absolutely agree with the fear of aspiration, that's maybe how she got the congestion in the first place. soft foods are the way to go. offer only small spoonsful and allow her plenty of time to swallow. as one ages muscles weaken and it becomes more difficult to chew and swallow. Be sure to watch her carefully as you feed her so she does not choke. Prop her up if you can to eat. Give her your full attention "Don't text and feed" Liquids can be thickened with a substance called "thicket" but if anyone ever gives me a cup of tea with thicket it they will be cleaning it up! things like Jello are good too and ice cream and sherbutt Make sure you keep her mouth clean and moist and lips smoothed with Chapstick or similar. If her urine is pale yellow and clear she is not dehydrated.

If it was me, I would want jell-o, ice cream, pudding, yogurt and strawberry shortcake.
French fries with gravy, please, or a sweet potato with butter and honey (sigh).

Can she chew grapes? Jello? Cucumbers? Does she give a reason, or is she unable to talk?

Thanks . I have am giving boiled spinach, soft vegetables etc. They have a lot of liquid in them.

Watermelon works great. Ice chips are crunchy. She may be afraid of aspirating the liquid.