My mom talks and asks questions all evening, but she never finishes a question or sentence.

Has she been in to see her neurologist lately? If this is new, s/he needs to know about it.

Meds for agitation might help as well.

Perhaps she can't think beyond what she's already saying. Sometimes with dementia, thought formation is restricted, so she may instinctively know she needs help with something but can't formulate the words.

You can try a few things, bearing in mind that trying to pin down her request makes her upset.

Create a list of things she normally would need - blanket if she's cold, water, etc.
Add pictures - they might be more easily recognized than words. She can point to what she wants. If it's not on the list though, that won't help.

Over days and weeks, list the things that she does need help with, based on your observation. You can gradually add those to the "help" list.

This is a hard situation. With dementia, her brain isn't able to completely process the requests, and you have to literally play a guessing game. When she does become angry, politely but firmly tell her that you're trying to help but it's not appropriate to direct anger toward you since you can't know what she needs - it's not your fault.

Not good suggestions, but this isn't an easily remedied situation. Sorry.

I would make her a deck of picture cards...bathroon, glass of water, blanket, etc. These could be photos or pictures cut out of a magazine, laminated onto heavy card stock. See if this helps.

Is she on any heavy duty meds? I ask because my mom was having similiar issues until doc cut her Way back on zanex and fentanyl. Wa la she got her words back...

Thank you for the good suggestions. I love the idea of a picture board or picture cards. I think that could really help. She's not on heavy duty meds Just takes a moderate dose of Paxil and a Seroquel each night. Might need to see the doc about a change in med.