Aw, precious, aren't you just the most ADORABLE thing! Your mother must be so proud!
Take the damned TIME to find a proper care facility for the woman that raised you. She's your Mama, honey, and if you don't want the responsibility of taking care of her, that's your option. Should have thought about this before you decided you needed to hie off to parts unknown.
Since you've been voluntarily caring for her, in some states dumping her off somewhere can leave you vulnerable to charges of elder abuse and abandonment. Of course, since your functional illiteracy has precluded your ability to tell us your state, you're just going to have to take your chances.