aw love. yes I have this. and the gifting thing is really hard to understand isnt it. If you look up covert narcissist you will probably recognise that in your mother. I know I have literally read three lines, but what you have said is totally relatable to me. if I am way off base just ignore me!
narcissists basically have a super fragile ego. that makes them need to be seen as the victim. this can be really subtle but when you start to think about it it might become clear that in lots of circumstances, they will manoeuvre into the hero role, or the victim role regularly. So for example, they buy gifts - hero and, bonus, victim:
So you ask
" mum, could you come and watch Jack a bit earlier tomorrow, I have been invited to a work thing and would love to go"...
and in return get something like
"well, I mean yes...I mean I have to go and buy Aunt Jenny a present as it's her birthday in two weeks, but of course if you need me to then of course I will find a way to fit it in..."
So they get this lovely double hit - she's a victim because she has to martyr herself to help you because thats what good mother does, and she's a hero for doing so so can tell her friends all about how she stepped in to help you. And you cant question why shes being a dick and going on about having to go buy presents for Jenny, because if Aunt jenny's birthday isn't for two weeks, why does it have to be tomorrow? but if you question that, then you look like you dont want Aunt Jenny to have a nice birthday and that's crazy!
So when you are a legitimate victim (such as with depression) it is very hard for them. because you are taking away their ability to be the victim. She cannot give it air time because you are stealing her thunder, essentially. but she knows that is obviously not ok. so she just says...nothing. literally gives you no air. and to her, she can pass that off as being supportive if you question her on it - she was respecting your privacy, or she thought you didnt want to be asked about it.
But to you, she is giving you no air - and as a daughter that is so painful a) because most other people seem to have a parent that just likes them, b) because you have been trauma bonded basically to want them, and its natural and c) because they are nice to other people and it just rubs your face in it - oh and b) because they've been gaslighting you most of your life - if you bring up their hurtful behaviour, they just will not accept that it went like that.
Usually these people also flip when they spot an opportunity to be a victim elsewhere - so maybe in a few months time, aunt Jenny mentions that her daughter is struggling with depression, suddenly your mother pipes up 'oh poor Bluegreen suffered with that too, it was a hard time for her, very worrying isn't it...blah blah blah.' because she needs the victim status and youre like what the actual fuck?
Was she ok with you before a certain age? like 6/8/10? and do you have siblings? Does she tend to genuinely not understand when other people dont see the world the same way as her? does she do things like babysit, or give money but it doesnt give emotional support? so youre like well yeah she is supportive I guess so why am I always feeling so empty.
Anyway yes it is really painful, and watching them be nice to your child basically kicks your inner child. it's horrid. and it is just because they like the hero/victim thing. Kid loves me so much I can buy him/play him/sugar him into liking me the most in the whole world. then the kid grows up and starts having their own opinions and they get stressed by that. Unfortunately you cant change them. They just have such fragile egos that when youre asking for them to change and just be nice to you, youre asking them to lose their protection mechanism.
(If this is totally not you sorry! just had a massive therapy session here...but either way I feel you! mums who dont mum like they like you is so hurtful)