In which case the daughter should have mentioned this to her mother before christmas, either saying 'can we not do presents/only do small presents this year, I'm struggling for money,' or, if she was completely broke, even asking her mother to give her money for Christmas rather than a present.
Also OP has said she is low-waged while her dd has a professional salary, so no reason why dd couldn't actually have more disposable income than OP!
If you aren't materialistic and don't think the amount is what matters when exchanging presents, or care too much about the environment to buy things that aren't necessary, then once you're an adult you should make this clear to your family before Christmas. 'Let's not do presents this year, let's just enjoy spending time together.' Or 'Shall we just do small presents this year given the cost of living?'
Buying something incredibly cheap for someone else but then happily accepting a present worth approx 32x more is not being frugal or caring, it's being cheeky and tight!
In this case, the DD not only didn't say beforehand that they shouldn't exchange expensive presents, but didn't say anything afterwards when she realised her mother had spent much more on her. Anyone with basic decency would have been mortified and said "Oh mum you shouldn't have spent so much on me" etc.
Which shows the DD DOES like nice things, and values expensive gifts when they are for her, just doesn't think she should reciprocate. Which is less indicative of a thoughtful, caring, non-materialistic person, than of a selfish, tight one!