Really sorry to ask this on here but is it quite a significant step when they put patients on syringe driver?

Diagnosis is T2N2M1 and secondary tumour is base of skull, causing weakness in arms and legs and unbearable pain. Primary tumor was esophagas and spread to nodes. 

My mums been in the hospice for a week for pain management and is losing mobility, has been bed ridden for 2 weeks and needs assistance from nurses to get out of bed for commode etc. 5 weeks ago we heard the chemo had helped shrink tumours but now we understand the 2nd one has diffused.

There hasn't been talk of it being final weeks but there hasn't been any indication of whats happening yet, waiting on a scan

She was put on syringe driver over weekend, they are hoping she will be discharged eventually but ive not a clue what happens after that

I'm getting married on Saturday and I just can't stop thinking about her, this is absolutely destroying me because time always felt endless and now I feel like I'm drowning and she doesn't want to see me, third day in a row refusing to and she can't use her phone to call or message