Mother wets the bed and surrounding the bed and goes in bathroom and wets on the floor. Any ideas what I can do?

Is she wearing a pull up type incontinence product?
If not that is what she needs.
Remove all her other underwear from the drawer where she keeps it and replace with the absorbent underwear.
Get a waterproof mattress pad and you should also get absorbent underpads. There are disposable ones but washable ones I feel are better. More economical as well as you can find them in much larger sizes.
Why is she getting the floor wet in the bathroom?
Is it because the toilet is to low? getting an ADA height toilet might help.
Is she off balance? providing grab bars or placing an attachment on the toilet that has arms so she can more easily lower herself and get up. (you can also take an extra walker and turn it around and place it at the toilet the arms of the walker will provide that extra support BUT it is not attached so it is not as secure as one that you would attach to the toilet. )

I should have asked if this is something that is a new occurrence or if it has been ongoing and now just has gotten worse? If it is new I would have her checked for a UTI. If it is been ongoing and has just gotten worse then it is one of the things that you deal with day to day and you play the "game" of anticipating what decline will you deal with next.

Is this is a new problem, or one that has gradually been getting worse over time?

Check out the great articles on incontinence here on AgingCare

https://www.agingcare.com/topics/96/incontinence/articles

Is she wearing incontinence underwear?
If not, take all her normal underpants away and replace with adult disposables. Put pads on her bed. Have her tested for a UTI. That can sometimes cause frequency of urination.
Try an appointment with a urologist. Some issues can be treated.