Are Speech Impediments And Grasping Objects Unconsciously Symptoms Of NPH?

Hello. My mom is in a nursing home. She is 90. One thing we know she has is NPH. But a few weeks ago, she largely lost the ability to speak. She went from having fairly normal conversations to only being able to string 2-3 words together once in awhile - all in about a week. She seems to understand what we are saying - just can t respond. The other odd thing she has started doing is constantly grasping things - her tissue box, the straw in her drink cup, the railing on her bed, etc - with her right hand - and she can t seem to get herself to let go. It s almost as if hervright hand has a mind of its own. There seems to be a lot neurologically going on...is it related to the NPH?